AMERICAN CENTURY INTERNATIONAL BOND FUNDS
N-30D, 1998-02-24
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                                    ANNUAL
                                    REPORT

                            [american century logo]
                                    American
                                Century(reg.sm)

                               DECEMBER 31, 1997

                                    BENHAM
                                     GROUP

                              International Bond

                               TABLE OF CONTENTS

Report Highlights .........................................................    1
Our Message to You ........................................................    2
Market Perspective ........................................................    3
Performance & Portfolio Information .......................................    4
Management Q & A ..........................................................    5
Schedule of Investments ...................................................    8
Statement of Assets and Liabilities .......................................   10
Statement of Operations ...................................................   11
Statements of Changes in Net Assets .......................................   12
Notes to Financial Statements .............................................   13
Financial Highlights ......................................................   16
Report of Independent Accountants .........................................   17
Retirement Account Information ............................................   18
Background Information
           Investment Philosophy & Policies ...............................   20
           Comparative Indices ............................................   20
           Lipper Rankings ................................................   20
           The Fund's Subadvisor ..........................................   20
           Investment Team Leaders ........................................   20
Glossary ..................................................................   21


       American Century  Investments  offers you nearly 70 fund choices covering
stocks,  bonds,  money markets,  specialty  investments and blended  portfolios.
We've organized our funds into three distinct groups,  based on investment style
and objectives, to help simplify your fund decisions. These groups appear below.

                  AMERICAN CENTURY INVESTMENTS--FAMILY OF FUNDS
- -------------------------------------------------------------------------------
        Benham                American Century       Twentieth Century(reg. tm)
     Group(reg. tm)                 Group                      Group
- -------------------------------------------------------------------------------
   MONEY MARKET FUNDS         ASSET ALLOCATION &           GROWTH FUNDS
 GOVERNMENT BOND FUNDS          BALANCED FUNDS          INTERNATIONAL FUNDS
 DIVERSIFIED BOND FUNDS   CONSERVATIVE EQUITY FUNDS
  MUNICIPAL BOND FUNDS         SPECIALTY FUNDS
- -------------------------------------------------------------------------------
     International
        Bond

We welcome your comments or questions about this report.

See the back cover for ways to contact us by mail, phone or e-mail.

American  Century and Benham  Group are  registered  marks of  American  Century
Services Corporation.


                                                   AMERICAN CENTURY INVESTMENTS


                               REPORT HIGHLIGHTS

MARKET PERSPECTIVE(+)

*   European  economic  and monetary  union (EMU)  appears to be on schedule for
    1999.

*   Preparations  for the new single  European  currency,  the euro, are causing
    bond yields to converge.  Ideally,  investors want to position themselves in
    countries where rates are expected to fall.

*   European economic growth remains weak but is improving.

*   Inflation does not appear to be a threat, which bodes well for bond returns.

*   European  currency  weakness against the U.S. dollar had a severely negative
    impact on European bond returns for U.S. investors in 1997.

*   We expect the outlook for European currencies to improve in 1998.

INTERNATIONAL BOND

*   1997 was a transition year for the  fund--shareholders  approved  changes in
    investment objectives, and a new fund name became effective October 1, 1997.

*   The fund remained  invested  primarily in European  government bonds through
    the end of the year.

*   1997 was the toughest performance year for the fund since its inception. The
    fund experienced  negative  returns,  primarily  because the strength of the
    U.S. dollar against European  currencies  caused currency losses that offset
    bond gains.

*   The  fund's  performance  lagged  the  average  international  income  fund,
    primarily because the fund did not hedge gainst the strong dollar as much as
    many of its peers.

*   The portfolio was  underweighted  against its benchmark  index in the "core"
    European countries and overweighted in "high yield" countries.

*   The investment team also reduced the fund's average maturity and duration in
    anticipation of stronger economic growth and higher interest rates.

*   The fund was not directly affected by the Asian crisis.

*   In January 1998, the fund shifted from the J.P. Morgan ECU-Weighted European
    Index to the J.P.  Morgan Global Traded  Government Bond Index as a base for
    its investment  weightings.  The fund essentially cut its German holdings in
    half and replaced them with Japanese bonds.

                INTERNATIONAL
                    BOND

TOTAL RETURNS:                AS OF 12/31/97
     6 Months                         1.34%*
     1 Year                           -5.88%

NET ASSETS:                   $165.7 million
     (AS OF 12/31/97)

INCEPTION DATE:                       1/7/92

TICKER SYMBOL:                         BEGBX

* Not annualized.

(+) This summary  focuses on Europe  because the fund remained fully invested in
European  bonds through the end of 1997, and over 75% of the fund is expected to
be invested in Europe in 1998.

Many of the investment  terms in this report are defined in the Glossary on page
21.


ANNUAL REPORT                                     REPORT HIGHLIGHTS       1


                              OUR MESSAGE TO YOU

              [photo of James E. Stowers III and James M. Benham]

    This  is  International  Bond's  first  annual  report  to  you  since  fund
shareholders  approved  changes to broaden the scope of the fund's  investments.
The changes  became  effective  October 1, 1997,  and were fully  implemented in
January 1998.  Shareholders also approved  proposals to simplify fund management
guidelines and adopt a unified fee structure.

    Unfortunately, 1997 was a difficult year for U.S. investors in international
bonds.  International  bond gains were offset by currency  losses  caused by the
strength of the U.S. dollar against most foreign currencies. According to Lipper
Analytical  Services,  the average  international bond fund returned -0.43%. Our
international  bond team provides  details on market  conditions and your fund's
performance on the following pages.

    On American Century's  corporate front, the past year was more rewarding.  A
major focus during the latter half of the year was the negotiation of a business
partnership  with  J.P.  Morgan  & Co.,  which  became  a  significant  minority
shareholder in American  Century on January 15, 1998.  J.P.  Morgan,  one of the
world's largest and oldest financial  services  companies,  has been in business
for more than 150 years, serving institutions,  governments and individuals with
complex  financial  needs.  Within the  framework of the  business  partnership,
American Century will continue to operate as an independent company.

    On a more  personal  note,  1997 was the year we said  farewell  to James M.
Benham,  founder of the Benham Group of mutual funds. Mr. Benham,  who announced
his  retirement in December,  was a pioneer in the no-load  mutual fund industry
and the father of the first money market fund for individual investors. With the
integration of Benham and Twentieth Century successfully  completed,  Mr. Benham
felt it was  time  to step  back  from  the  business  and  enjoy a  well-earned
retirement, confident that he leaves the funds he founded in very capable hands.
Much of the Benham culture has become a part of American Century,  including the
educational  investor  seminar program Mr. Benham created.  And two of his sons,
Jim A.  Benham and Tim  Benham,  remain  with the company to carry on the Benham
tradition.

    The  coming  year is also  noteworthy  -- 1998  marks  the 40th  year  since
American  Century  launched its first mutual funds.  Not many fund companies can
claim a 40-year  track record,  or a fund family that includes  nearly 70 stock,
bond, money market and combination (stock and bond) funds that provide investors
with such a wide range of choice and flexibility.

    Whatever  your  financial   goals,  we  believe   American  Century  has  an
outstanding lineup of funds to help you reach them.

      Sincerely,

/s/James E. Stowers III                    /s/James M. Benham
James E. Stowers III                       James M. Benham
Chief Executive Officer                    Vice Chairman
American Century Investment                American Century Investment
   Management, Inc.                           Management, Inc.


2      OUR MESSAGE TO YOU                     AMERICAN CENTURY INVESTMENTS


                              MARKET PERSPECTIVE*

[line graph - data below]

CONVERGING 10-YEAR NOTE YIELDS

                 Italy           Spain           Germany
1/3/97           7.632%          7.021%          6.073%
1/10/97          7.534%          6.998%          6.014%
1/17/97          7.263%          6.917%          5.851%
1/24/97          7.247%          6.837%          5.871%
1/31/97          7.352%          6.756%          5.798%
2/7/97           7.268%          6.778%          5.693%
2/14/97          7.333%          6.659%          5.561%
2/21/97          7.388%          6.740%          5.583%
2/28/97          7.741%          7.007%          5.616%
3/7/97           7.681%          6.949%          5.727%
3/14/97          7.915%          7.063%          5.759%
3/21/97          8.001%          7.210%          5.974%
3/28/97          8.022%          7.163%          5.982%
4/4/97           7.976%          7.133%          6.073%
4/11/97          7.770%          7.005%          6.024%
4/18/97          7.697%          6.970%          5.888%
4/25/97          7.788%          7.036%          5.949%
5/2/97           7.664%          6.889%          5.806%
5/9/97           7.494%          6.735%          5.797%
5/16/97          7.363%          6.622%          5.795%
5/23/97          7.401%          6.623%          5.923%
5/30/97          7.542%          6.747%          5.986%
6/6/97           7.431%          6.694%          5.834%
6/13/97          7.273%          6.478%          5.738%
6/20/97          7.171%          6.452%          5.791%
6/27/97          6.987%          6.392%          5.745%
7/3/97           6.838%          6.315%          5.660%
7/10/97          6.681%          6.228%          5.604%
7/17/97          6.735%          6.253%          5.674%
7/24/97          6.308%          6.204%          5.641%
7/31/97          6.698%          6.286%          5.672%
8/8/97           6.792%          6.407%          5.780%
8/15/97          6.750%          6.358%          5.731%
8/22/97          6.779%          6.389%          5.754%
8/29/97          6.835%          6.386%          5.740%
9/5/97           6.588%          6.273%          5.738%
9/12/97          6.578%          6.237%          5.678%
9/19/97          6.287%          6.004%          5.568%
9/26/97          6.168%          5.961%          5.578%
10/3/97          6.075%          5.809%          5.436%
10/10/97         6.341%          6.045%          5.662%
10/17/97         6.205%          6.062%          5.733%
10/24/97         6.232%          6.092%          5.741%
10/31/97         6.264%          6.046%          5.624%
11/7/97          6.205%          6.046%          5.652%
11/14/97         6.112%          5.932%          5.627%
11/21/97         5.975%          5.875%          5.572%
11/28/97         5.907%          5.789%          5.489%
12/5/97          5.839%          5.780%          5.471%
12/12/97         5.712%          5.654%          5.335%
12/19/97         5.623%          5.545%          5.297%
12/26/97         5.533%          5.513%          5.295%

Source: Salomon Brothers Yield Book

EMU UPDATE

    European  economic  and monetary  union  (EMU),  scheduled to begin in 1999,
appears to be on track. The preparations for EMU and a single European currency,
the euro,  provided  much of the backdrop for events in the European bond market
in 1997.

    Part of that  backdrop was yield  convergence.  Bond yields of  economically
weaker,  so-called "high-yield" countries such as Spain and Italy converged with
those  of  the  "core"   countries   --   Germany,   Belgium,   France  and  the
Netherlands--that  traditionally have stronger economies.  (See the accompanying
graph.)

    By 1999, short-term interest rates in the EMU countries should be identical.
Short-term  interest  rates  at  slightly  above  4%  imply  lower  rates in the
high-yield countries and higher rates in the core countries.  As a result, bonds
in the  high-yield  countries  are  expected  to  outperform  those  in the core
countries.

    Bonds from the U.K. look  attractive for similar  reasons.  Though it is not
one of the 11 countries that will join EMU in 1999, the U.K. is expected to join
several years later.  After rate increases to curb strong economic growth,  U.K.
interest rates should be poised for downward convergence,  and U.K. bond returns
should be favorable.

ECONOMIC GROWTH AND INFLATION

    With the  exception  of the U.K.,  which is  already  well into an  economic
recovery,  Europe is  economically  weak but in the initial  stages of recovery.
Double-digit  unemployment still prevails on much of the continent, but economic
growth rates are  improving.  In 1997,  the estimated  economic  growth rate for
Europe as a whole was  approximately  2.5%.  We expect it to  increase  to 3% or
slightly higher in 1998 despite the potential impact of the Asian crisis.

    Though  economic  growth is  improving,  inflation  does not  appear to be a
threat. Inflation rates in the European economies generally ranged from 2% to 3%
in 1997. We expect them to remain at similar levels in 1998.

CURRENCY VALUES

    European  currency  weakness  against the U.S. dollar in 1997 had a severely
negative  impact on U.S.  investors in European  bonds.  Low  European  economic
growth and interest rates compared to the U.S.  translated into declining values
of most European  currencies  against the dollar in 1997,  especially during the
first half of the year. European  currencies  stabilized at mid-year as economic
growth rates  picked up, but it was not enough to offset  earlier  losses.  When
European  bond  returns were  converted  into  dollars for U.S.  investors,  the
devalued currencies bought fewer dollars, wiping out the bond gains.

    With the U.S.  appearing to be in the late stages of its economic  cycle and
the European  economies  generally in the early stages of theirs,  it looks like
European  currency  stabilization  against  the  dollar is in  order.  We do not
believe that foreign exchange factors will be as harsh on American  investors in
international securities in 1998 as they were in 1997, particularly in Europe.

* This summary  focuses on Europe  because the fund remained  fully  invested in
European  bonds through the end of 1997, and over 75% of the fund is expected to
be invested in Europe in 1998.



ANNUAL REPORT                                    MARKET PERSPECTIVE       3


<TABLE>
<CAPTION>
                      PERFORMANCE & PORTFOLIO INFORMATION

                                                                            AVERAGE ANNUAL RETURNS
                                  6 MONTHS         1 YEAR           3 YEARS         5 YEARS       LIFE OF FUND(1)
- -------------------------------------------------------------------------------------------------------------------
TOTAL RETURNS AS OF
DECEMBER 31, 1997(2)
<S>                                  <C>              <C>             <C>             <C>            <C>  
  International Bond ..............  1.34%           -5.88%           7.59%           7.17%          7.18%
  J.P. Morgan ECU-Weighted
    European Index(+) .............  1.51%           -5.33%           8.03%           8.13%          6.96%
  Average International
    Income Fund(4) ................  0.91%           -0.43%           9.03%           7.67%          7.51%(3)
  Fund's Ranking Among
  International Income Funds(4) ...   --          42 out of 46    16 out of 31     8 out of 11     4 out of 9(3)
</TABLE>

(1) Inception date was January 7, 1992.

(2) Returns for periods less than one year are not annualized.

(3)  Since  1/31/92,  the date nearest the fund's  inception  for which data are
     available.

(4)  According to Lipper Analytical Services.

See pages 20-21 for more information  about returns,  the comparative  index and
Lipper fund rankings.


[mountain graph - data below]

GROWTH OF $10,000 OVER LIFE OF FUND
$10,000 investment made 1/7/92

                               Value on 12/31/97
               International Bond             J.P. Morgan ECU Index(+)
1/7/92              $10,000                       $10,000
Jan-92              $9,850                        $9,577
Feb-92              $9,820                        $9,498
Mar-92              $9,736                        $9,386
Apr-92              $9,866                        $9,528
May-92              $10,227                       $9,907
Jun-92              $10,731                       $10,391
Jul-92              $10,975                       $10,608
Aug-92              $11,513                       $11,196
Sep-92              $11,501                       $11,050
Oct-92              $10,957                       $10,495
Nov-92              $10,700                       $10,136
Dec-92              $10,708                       $10,120
Jan-93              $10,847                       $10,293
Feb-93              $10,804                       $10,227
Mar-93              $11,179                       $10,610
Apr-93              $11,350                       $10,894
May-93              $11,425                       $10,945
Jun-93              $11,114                       $10,548
Jul-93              $10,890                       $10,352
Aug-93              $11,639                       $10,908
Sep-93              $11,992                       $11,218
Oct-93              $11,820                       $11,102
Nov-93              $11,713                       $10,992
Dec-93              $11,970                       $11,200
Jan-94              $12,103                       $11,246
Feb-94              $11,871                       $11,159
Mar-94              $11,871                       $11,317
Apr-94              $11,894                       $11,326
May-94              $11,693                       $11,221
Jun-94              $11,971                       $11,528
Jul-94              $12,073                       $11,665
Aug-94              $11,881                       $11,590
Sep-94              $12,050                       $11,749
Oct-94              $12,484                       $12,142
Nov-94              $12,130                       $11,860
Dec-94              $12,152                       $11,863
Jan-95              $12,469                       $12,257
Feb-95              $12,950                       $12,619
Mar-95              $13,834                       $13,543
Apr-95              $13,881                       $13,595
May-95              $14,071                       $13,778
Jun-95              $14,202                       $13,906
Jul-95              $14,502                       $14,288
Aug-95              $13,985                       $13,705
Sep-95              $14,393                       $14,188
Oct-95              $14,771                       $14,497
Nov-95              $14,759                       $14,522
Dec-95              $15,117                       $14,906
Jan-96              $14,877                       $14,616
Feb-96              $14,801                       $14,608
Mar-96              $14,834                       $14,633
Apr-96              $14,692                       $14,449
May-96              $14,821                       $14,551
Jun-96              $14,881                       $14,700
Jul-96              $15,391                       $15,225
Aug-96              $15,431                       $15,282
Sep-96              $15,491                       $15,257
Oct-96              $15,781                       $15,595
Nov-96              $15,978                       $15,765
Dec-96              $16,082                       $15,798
Jan-97              $15,250                       $15,037
Feb-97              $15,032                       $14,759
Mar-97              $14,992                       $14,759
Apr-97              $14,719                       $14,463
May-97              $14,965                       $14,725
Jun-97              $14,938                       $14,735
Jul-97              $14,364                       $14,190
Aug-97              $14,486                       $14,368
Sep-97              $15,100                       $14,833
Oct-97              $15,428                       $15,242
Nov-97              $15,278                       $15,072
Dec-97              $15,136                       $14,957

Past  performance  does not  guarantee  future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost.

The line representing the fund's total return includes  operating expenses (such
as transaction costs and management fees) that reduce returns, while the index's
total return line does not.

PORTFOLIO AT A GLANCE
                                 12/31/97          12/31/96
Number of Securities                25                34
Weighted Average Maturity        6.3 years         6.5 years
Average Duration                 4.3 years         5.0 years
Expense Ratio                      0.84%             0.83%


(+) On July 30, 1997,  shareholders  voted to change the fund from a European to
an  International  bond fund. A new  benchmark,  the J.P.  MORGAN  GLOBAL TRADED
GOVERNMENT  BOND INDEX  (excluding the U.S. and with Japan weighted at 15%), was
chosen for the fund to reflect its new international  focus.  However,  the fund
did not begin to invest in bonds outside of Europe until  January 1998,  and the
new  benchmark was not effective  until that time.  Therefore,  we have used the
fund's  old  benchmark--the  J.P.  MORGAN  ECU-WEIGHTED  EUROPEAN  INDEX  (which
remained  the  fund's  benchmark  until  December  31,  1997)--for   performance
comparisons in this report. Comparisons with the fund's new benchmark will begin
with the June 30, 1998, semiannual report.


4      PERFORMANCE & PORTFOLIO INFORMATION    AMERICAN CENTURY INVESTMENTS


                                MANAGEMENT Q&A

    An interview with Dominic Pegler and Dave Schroeder,  portfolio  managers on
the International Bond investment team.

HOW DID THE FUND PERFORM?

    Though the fund  rebounded  in the second  half of 1997,  its return for the
entire year was negative.  The fund's total return in 1997 was -5.88%,  compared
with the -5.33% return of the J.P.  Morgan  ECU-Weighted  European Index and the
- -0.43% average return of the 46  "International  Income Funds" tracked by Lipper
Analytical Services. (See the Total Returns table on the previous page for other
fund performance comparisons.)

    The fund's  1997  return was its worst  calendar  year  total  return  since
inception. The negative performance can be attributed to the unusual strength of
the U.S.  dollar and the fact that,  following our typical  practice,  we didn't
hedge the fund's  investments  against  the dollar.  In  addition  to  providing
international diversification,  the fund can be used as a non-dollar-denominated
hedge for U.S. investors against dollar weakness. Unfortunately, 1997 was almost
exactly the opposite of the "weak dollar"  investment  environment for which the
fund is best suited.

WHY  HAVE  YOU  COMPARED  THE  FUND'S   PERFORMANCE   AGAINST  THE  J.P.  MORGAN
ECU-WEIGHTED EUROPEAN INDEX?

    For  this  report,  we used the  European  bond  index  because  the  fund's
investment  portfolio  consisted  primarily of European government bonds through
the end of the year. Even though the fund changed its name to International Bond
on October 1, 1997, we needed  additional  time to implement the new  investment
strategy.  (The new strategy enables the fund to invest in bonds from around the
globe, excluding the U.S. It also allows the fund to invest


[bar graph - data below]

INTERNATIONAL BOND'S ONE-YEAR RETURNS
SINCE INCEPTION (Periods ended December 31)

            International Bond        J.P. Morgan ECU Index(2)
12/92(1)           8.71%                       1.20%
12/93             11.79%                      10.67%
12/94              1.52%                       5.92%
12/95             24.40%                      25.65%
12/96              6.38%                       5.98%
12/97             -5.88%                      -5.33%

This graph  illustrates the fund's returns since its inception and compares them
with the index's returns.  The fund's total returns include operating  expenses,
while the index's returns do not. See page 20 for a description of the index.

Past  performance  is no  guarantee  of future  results.  Investment  return and
principal  value will fluctuate,  and redemption  value may be more or less than
original cost.

(1) Return from the fund's 1/7/92 inception to 12/31/92.

(2) See note on page 4.


ANNUAL REPORT                                      MANAGEMENT Q & A       5


                                MANAGEMENT Q&A

as much as 35% of its  assets in  foreign  corporate  bonds that are rated AA or
better.) The implementation delay actually benefited the fund because it did not
hold Japanese bonds when the economic crisis in Asia erupted in October.

WHY DID THE FUND UNDERPERFORM THE INDEX IN 1997?

    It's not unusual for the fund to slightly underperform the index because the
fund's total return is reduced by fees and operating expenses, while the index's
isn't.  That's why we also compare the fund's return to the performance of other
mutual funds, such as the 46 funds represented by Lipper's "International Income
Funds" category.

WHY DID THE FUND UNDERPERFORM THE AVERAGE INTERNATIONAL INCOME FUND IN 1997?

    Many  international  income funds can hedge 50% or more of their investments
against the U.S. dollar, which helps them offset currency losses when the dollar
strengthens, as it did in 1997. International Bond cannot hedge more than 25% of
its  portfolio,  and we seldom  approach that level,  preferring to maintain our
"pure play" as a non-dollar-denominated fund. Hedging can also incur significant
transaction costs, which reduce fund returns.

HOW WAS THE FUND POSITIONED IN THE SECOND HALF OF 1997?

    As stated in the  fund's  6/30/97  semiannual  report,  we  expected  to see
stronger economic growth and stable to rising interest rates. In anticipation of
higher rates, we reduced the investment  portfolio's  interest rate  sensitivity
(and its  vulnerability  to price  declines) by  shortening  the fund's  average
maturity and duration.  We shortened the fund's average  maturity from 6.9 years
on June 30 to 6.3 years on December 31. Similarly, we reduced the fund's average
duration from 5.2 years to 4.3 years during the same period.

    Because the "core" countries (Germany, France, the Netherlands, Belgium) had
lower interest rates than the "high yield"  countries  (such as Italy and Spain)
and the U.K., we remained  underweight  in the core  countries and overweight in
the U.K., Italy and Spain for most of the year.  However, as economic conditions
in Spain  improved and Italy lowered its rates in  preparation  for EMU, we sold
Spanish and Italian  bonds and moved much of that money into British and Swedish
securities. The U.K. and Sweden were our largest overweight positions at the end
of the year (see the accompanying chart).

    Though we  didn't  make any bond  investments  outside  Europe  in 1997,  we
utilized  the  fund's new  investment  objectives  in the fourth  quarter to buy
corporate bonds for the first time, in France and the Netherlands.

WHAT EFFECTS DID THE ASIAN CRISIS HAVE ON GLOBAL BOND MARKETS?

    The "safe-haven  effect"  boosted many bond markets in developed  countries,
including those in Europe. As investors removed their money from


[bar chart - data below]

BOND HOLDINGS BY COUNTRY (as of 12/31/97)

                   International Bond      J.P. Morgan ECU Index
U.K.                      31                      13
Germany                   26                      32
France                    17                      21
Sweden                    10                       0
Netherlands                8                      10
Denmark                    4                       3
Spain                      2                       4
Other                      2                      17


6    MANAGEMENT Q & A                             AMERICAN CENTURY INVESTMENTS


                                MANAGEMENT Q&A

troubled  Southeast  Asian  markets,  they  moved it to the  relative  safety of
government  securities in the U.S.,  Europe and Japan.  Investors fleeing global
stock market volatility also sought refuge in the government bonds of Europe and
the U.S.

    The  impending  recession in Southeast  Asia will likely lead to an economic
slowdown in other parts of the world,  especially Japan.  This, too, is positive
for global bond markets  because  interest rates  typically fall and bond prices
rise as economic growth slows.

HOW WAS THE FUND AFFECTED BY THE ASIAN CRISIS?

    It wasn't directly affected at all, because the fund was not invested in the
region.  In October,  when the crisis hit the hardest,  all of the fund's assets
were  still  invested  in  European  government  bonds.  The  fund's  investment
parameters  do not allow us to invest in Southeast  Asia,  even if we wanted to.
The fund can only  invest in bonds  rated AA or  better,  and all of the debt in
this region has lower credit ratings.

WHAT CHANGES DID YOU BEGIN MAKING TO THE INVESTMENT PORTFOLIO IN JANUARY 1998?

    The  biggest  change  was  that  we no  longer  based  our  neutral  country
weightings on the J.P. Morgan ECU-Weighted  European Index. Instead, we switched
to the J.P. Morgan Global Traded  Government Bond Index  (excluding the U.S. and
with Japan weighted at 15%), a customized international bond index that consists
of foreign bonds from 21 developed countries in North America,  Europe and Asia,
as well as Australia.  We sold about 25% of the fund's  European bond  holdings,
temporarily  investing  the  proceeds in  short-term  U.S.  securities.  Then we
incrementally and selectively bought bonds in Japan, Canada and Australia.

HOW DIFFERENT WILL THE FUND'S PORTFOLIO LOOK?

    The  biggest  differences  will be in the  weightings  of Germany and Japan.
Two-thirds of the J.P. Morgan ECU-Weighted  European Index was weighted in three
European  countries -- Germany,  France and the U.K., with Germany  representing
nearly a third of the index.  By contrast,  Germany  represents  just 16% of the
customized J.P. Morgan Global Traded Government Bond Index, and Germany,  France
and the U.K. combined  represent just 44% of the new index.  Japan is 15% of the
global  index.  The largest  weightings,  in order of size, in the new index are
Germany,  Japan, France, Italy and the U.K.,  representing  approximately 70% of
the index. Canada and Australia represent 5% and 2% of the index,  respectively.
We have invested  neutral to the index in Japan,  Canada and  Australia,  and we
expect to remain  neutral  during  the first half of 1998.  In  Europe,  we will
continue to overweight the U.K. and Sweden, and underweight the core countries.


[bar chart - data below]

BOND HOLDINGS BY COUNTRY (as of 6/30/97)

                  International Bond     J.P. Morgan ECU Index
Germany                   31%                      32%
France                    23%                      21%
U.K.                      17%                      13%
Italy                     11%                       8%
Netherlands                8%                      10%
Spain                      6%                       4%
Belgium                    1%                       9%
Other                      3%                       3%


ANNUAL REPORT                                      MANAGEMENT Q & A       7


<TABLE>
<CAPTION>
                            SCHEDULE OF INVESTMENTS

DECEMBER 31, 1997


Principal Amount                                                          Value
- ------------------------------------------------------------------------------------

GOVERNMENT BONDS

DENMARK--3.6%

<S>                       <C>                                    <C>
DKK                       25,000,000  Kingdom of Denmark,
                                          8.00%, 3/15/06           $    4,226,339
                                                                  --------------------

FRANCE--11.1%

FRF                       1,885,000    Government of France,
                                          4.75%, 3/12/02                  313,775

                            964,000    Government of France,
                                          7.50%, 4/25/05                  183,058

                         32,790,000    Government of France,
                                          6.00%, 10/25/25               5,523,588

                         36,200,000    Societe Nationale des
                                          Chemins des Fers,
                                          8.60%, 3/9/04                 7,090,784
                                                                  --------------------

                                                                       13,111,205
                                                                  --------------------

GERMANY--25.9%

DEM                       9,000,000    FNMA Global Bond, 6.00%,
                                          8/23/00                       5,149,434

                            490,000    German Federal Republic,
                                          8.00%, 7/22/02                  307,059

                            200,000    German Federal Republic,
                                          7.125%, 12/20/02                121,938

                          8,850,000    German Federal Republic,
                                          6.875%, 5/12/05               5,405,613

                            360,000    German Federal Republic,
                                          6.00%, 1/4/07                   208,980

                          5,000,000    Inter American Development
                                          Bank, 7.50%, 12/16/02         3,038,728

                          7,600,000    Kredit Fuer Wiederaufbau
                                          International Finance,
                                          6.75%, 6/20/05                4,492,091

                          7,100,000    Suedwestdeutsche
                                          Landesbank, 6.25%,
                                          10/21/03                      4,153,132

                         13,000,000    Tennessee Valley Authority
                                          Global Bond, 6.375%,
                                          9/18/06                       7,635,408
                                                                  --------------------

                                                                       30,512,383
                                                                  --------------------

NETHERLANDS--0.1%

NLG                         150,000    Government of the
                                          Netherlands, 8.50%,
                                          3/15/01                          82,287
                                                                  --------------------


Principal Amount                                                          Value
- ------------------------------------------------------------------------------------

SPAIN--1.6%

ESP                     261,560,000    Government of Spain,
                                          7.35%, 3/31/07           $    1,927,944
                                                                  --------------------

SWEDEN--10.6%

SEK                       54,200,000  Kingdom of Sweden,
                                          10.25%, 5/5/00                7,538,993

                          34,300,000  Kingdom of Sweden,
                                          8.00%, 8/15/07                4,945,207
                                                                  --------------------

                                                                       12,484,200
                                                                  --------------------

SWITZERLAND--1.8%

CHF                        2,800,000  Government of Switzerland,
                                          4.50%, 6/10/07                2,102,074
                                                                  --------------------

UNITED KINGDOM--31.4%

GBP                       4,160,000    Republic of Austria,
                                          9.00%, 7/22/04                7,657,808

                          4,900,000    United Kingdom Treasury,
                                          9.75%, 8/27/02                9,094,877

                          3,300,000    United Kingdom Treasury,
                                          9.50%, 4/18/05                6,406,168

                          6,580,000    United Kingdom Treasury,
                                          8.75%, 8/25/17               13,846,744
                                                                  --------------------

                                                                       37,005,597
                                                                  --------------------

TOTAL GOVERNMENT BONDS--86.1%                                         101,452,029
                                                                  --------------------
   (Cost $103,871,643)

CORPORATE BONDS

FRANCE--6.0%

FRF                       41,000,000  CETELEM EOS, 6.30%,
                                          11/24/99                      7,063,326
                                                                  --------------------

NETHERLANDS--7.9%

NLG                      17,000,000    Bank Nederland Gemeenten,
                                          7.625%, 12/16/02              9,315,815
                                                                  --------------------

TOTAL CORPORATE BONDS--13.9%                                           16,379,141
                                                                  --------------------
   (Cost $18,093,448)

TOTAL INVESTMENT SECURITIES--100.0%                                  $117,831,170
                                                                  ====================
   (Cost $121,965,091)
</TABLE>

See Notes to Financial Statements


8      SCHEDULE OF INVESTMENTS                AMERICAN CENTURY INVESTMENTS


                            SCHEDULE OF INVESTMENTS

DECEMBER 31, 1997

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS

      Contracts               Settlement                        Unrealized
       to Sell                   Dates            Value         Gain (Loss)
- ------------------------------------------------------------------------------

      609,481,936    BEF        3/18/98     $  16,524,911      $  162,073

      246,071,601    BEF        6/29/98         6,708,077         13,153

       40,720,113    DEM        3/18/98        22,737,298         742,744

       60,476,425    DEM        6/29/98        33,958,617         153,668

        5,988,986    DKK        3/18/98           877,508         21,355

        2,445,881    DKK        6/29/98           360,046          3,254

    2,048,196,657    ESP        3/18/98        13,471,661         273,440

       38,906,835    ESP        6/29/98           256,777           2,723

       10,008,587    FIM        3/18/98         1,844,819          62,996

       51,217,949    FRF        3/18/98         8,547,863         181,545

       69,226,323    FRF        6/29/98        11,617,550          45,579

        3,543,941    GBP        3/18/98         5,798,798        (10,974)

       10,567,767    GBP        6/29/98        17,208,825        (80,445)

   13,986,674,501    ITL        3/18/98         7,903,898         173,841

    2,343,136,587    ITL        6/29/98         1,325,735          17,877

        2,889,805    NLG        3/18/98         1,431,973          14,014

       10,748,413    NLG        6/29/98         5,356,506          18,641

      147,274,935    SEK        3/18/98        18,587,549         864,098

      156,175,464    SEK        6/29/98        19,752,646         404,615
                                            ----------------   --------------

                                              $194,271,057      $3,064,197
                                            ================   ==============

(Value on Settlement Date $197,335,254)


      Contracts              Settlement                         Unrealized
       to Buy                   Dates              Value        Gain (Loss)
- -----------------------------------------------------------------------------

        4,948,111    AUD        6/29/98     $   3,237,972        $ (5,762)

      609,481,936    BEF        3/18/98        16,524,910        (343,436)

      552,873,654    BEF        6/29/98        15,071,707        (122,347)

       13,218,098    CAD        6/29/98         9,291,971         26,516

       40,720,113    DEM        3/18/98        22,737,298        (492,788)

        5,774,263    DEM        6/29/98         3,242,354        (44,871)

        5,988,986    DKK        3/18/98           877,508        (20,112)

        6,745,289    DKK        6/29/98           992,939         (6,987)

    2,048,196,657    ESP        3/18/98        13,471,661        (453,919)

      820,681,528    ESP        6/29/98         5,416,319         (47,380)

        1,008,587    FIM        3/18/98         1,844,819         (55,786)

       51,217,949    FRF        3/18/98         8,547,863        (172,069)

       10,672,073    FRF        6/29/98         1,790,986         (17,227)

        3,543,941    GBP        3/18/98         5,798,798        (149,437)

          799,925    GBP        6/29/98         1,302,619          (3,799)

   13,986,674,501    ITL        3/18/98         7,903,898        (210,548)

   33,653,797,735    ITL        6/29/98        19,041,161        (189,934)

    3,288,909,000    JPY        6/29/98        25,873,665         (64,104)

        2,889,805    NLG        3/18/98         1,431,973         (34,635)

        4,186,055    NLG        6/29/98         2,086,134         (16,054)

      147,274,935    SEK        3/18/98        18,587,549        (399,064)

       96,988,094    SEK        6/29/98        12,266,789        (204,939)
                                           ----------------   ---------------
                                             $197,340,893      $(3,028,682)
                                           ================   ===============

(Value on Settlement Date $200,369,575)


NOTES TO SCHEDULE OF INVESTMENTS

AUD = Australian Dollar

BEF = Belgian Franc

CAD = Canadian Dollar

CHF = Swiss Franc

DEM = German Mark

DKK = Danish Krone

ESP = Spanish Peseta

FNMA = Federal National Mortgage Association

FIM = Finnish Markka

FRF = French Franc

GBP = British Pound

ITL = Italian Lira

JPY = Japanese Yen

NLG = Netherlands Guilder

SEK = Swedish Krona

See Notes to Financial Statements


ANNUAL REPORT                               SCHEDULE OF INVESTMENTS       9


                      STATEMENT OF ASSETS AND LIABILITIES

DECEMBER 31, 1997

ASSETS

Investment securities, at value (identified
 cost of $121,965,091) (Note 3) ..........................        $ 117,831,170

Foreign currency holdings, at value
  (identified cost of $1,715,522) ........................            1,701,875

Cash .....................................................              485,508

Receivable for investments sold ..........................           45,105,875

Receivable for forward foreign
 currency exchange contracts .............................            3,182,132

Interest receivable ......................................            3,468,469
                                                                  -------------
                                                                    171,775,029
                                                                  -------------
LIABILITIES

Disbursements in excess of
 demand deposit cash .....................................              261,026

Payable for investments purchased ........................            2,153,942

Payable for forward foreign
 currency exchange contracts .............................            3,146,617

Payable for capital shares redeemed ......................              359,865

Accrued management fees (Note 2) .........................              122,423
                                                                  -------------
                                                                      6,043,873
                                                                  -------------
Net Assets ...............................................        $ 165,731,156
                                                                  =============
CAPITAL SHARES

Outstanding (Unlimited number
 of shares authorized) ...................................           15,176,256
                                                                  =============

Net Asset Value Per Share ................................        $       10.92
                                                                  =============
NET ASSETS CONSIST OF:

Capital paid in ..........................................          $170,173,52

Distributions in excess of
  net investment income ..................................           (1,481,465)

Accumulated undistributed net
 realized loss from investments
 and foreign currency transactions .......................            1,248,251

Net unrealized depreciation on
 investments and translation
 of assets and liabilities in
 foreign currencies (Note 3) .............................           (4,209,150)
                                                                  -------------
                                                                  $ 165,731,156
                                                                  =============
See Notes to Financial Statements


10     STATEMENT OF ASSETS AND LIABILITIES     AMERICAN CENTURY INVESTMENTS


                            STATEMENT OF OPERATIONS

YEAR ENDED DECEMBER 31, 1997

INVESTMENT INCOME

Income:

Interest (net of foreign taxes
  withheld of $62,187) ..................................          $ 11,676,370
                                                                   ------------
Expenses (Note 2):

Investment advisory fees ................................             1,219,730

Transfer agency fees ....................................               134,632

Administrative fees .....................................               120,327

Printing and postage ....................................                59,085

Trustees' fees and expenses .............................                56,358

Custodian fees ..........................................                55,351

Auditing and legal fees .................................                33,570

Registration and filing fees ............................                21,313

Other operating expenses ................................                 9,515
                                                                   ------------
  Total expenses ........................................             1,709,881

Amount recouped (Note 2) ................................                22,385
                                                                   ------------
  Net expenses ..........................................             1,732,266
                                                                   ------------
Net investment income ...................................             9,944,104
                                                                   ------------
REALIZED AND UNREALIZED
GAIN (LOSS)ON INVESTMENTS
AND FOREIGN CURRENCY (NOTE 3)

Net realized gain (loss) on:

Investments .............................................             9,523,659

Foreign currency transactions ...........................           (22,790,500)
                                                                   ------------
                                                                    (13,266,841)
                                                                   ------------
Change in net unrealized
  depreciation on:

Investments .............................................            (4,863,897)

Translation of assets and
  liabilities in foreign currencies .....................            (7,482,631)
                                                                   ------------
                                                                    (12,346,528)
                                                                   ------------
Net realized and unrealized loss on
investments and foreign currency ........................           (25,613,369)
                                                                   ------------
Net Decrease in Net Assets
Resulting from Operations ...............................          $(15,669,265)
                                                                   ============
See Notes to Financial Statements


ANNUAL REPORT                               STATEMENT OF OPERATIONS       11


                       STATEMENTS OF CHANGES IN NET ASSETS

YEARS ENDED DECEMBER 31, 1997 AND  
DECEMBER 31, 1996

Increase (Decrease) in Net Assets                      1997             1996

OPERATIONS

Net investment income ........................   $   9,944,104    $  13,573,654

Net realized gain (loss) on investments
 and foreign currency transactions ...........     (13,266,841)       7,792,321

Change in net unrealized depreciation
 on investments
 and translation of assets and
 liabilities in foreign currencies ...........     (12,346,528)      (7,068,835)
                                                 -------------    -------------
Net increase (decrease) in
 net assets resulting from operations ........     (15,669,265)      14,297,140
                                                 -------------    -------------
DISTRIBUTIONS TO SHAREHOLDERS

From net investment income ...................        (559,851)     (14,902,694)

In excess of net investment income ...........            --           (469,390)

From net realized gains on
 investment transactions .....................      (2,182,275)      (3,159,533)
                                                 -------------    -------------
Decrease in net assets from distributions ....      (2,742,126)     (18,531,617)
                                                 -------------    -------------
CAPITAL SHARE TRANSACTIONS

Proceeds from shares sold ....................      93,135,669      127,499,231

Proceeds from reinvestment of distributions ..       2,542,647       16,233,620

Payments for shares redeemed .................    (163,991,495)    (139,289,703)
                                                 -------------    -------------
Net increase (decrease) in
 net assets from capital share transactions ..     (68,313,179)       4,443,148
                                                 -------------    -------------
Net increase (decrease) in net assets ........     (86,724,570)         208,671

NET ASSETS

Beginning of year ............................     252,455,726      252,247,055
                                                 -------------    -------------
End of year ..................................   $ 165,731,156    $ 252,455,726
                                                 =============    =============
Distributions in excess of
  net investment income ......................   $  (1,481,465)   $    (167,924)
                                                 =============    =============
TRANSACTIONS IN
SHARES OF THE FUND

Sold .........................................       8,534,948       10,867,890

Issued in reinvestment of dividends ..........         230,124        1,406,608

Redeemed .....................................     (15,004,608)     (11,964,150)
                                                 -------------    -------------
Net increase (decrease) ......................      (6,239,536)         310,348
                                                 =============    =============
See Notes to Financial Statements


12      STATEMENTS OF CHANGES IN NET ASSETS    AMERICAN CENTURY INVESTMENTS


                         NOTES TO FINANCIAL STATEMENTS

DECEMBER 31, 1997

1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

    ORGANIZATION--American  Century  International  Bond  Funds  (the  Trust) is
registered   under  the   Investment   Company   Act  of  1940  as  an  open-end
non-diversified   management  investment  company.  American  Century  -  Benham
International Bond Fund,  formerly American  Century-Benham  European Government
Bond  Fund,  (the  Fund)  is the sole  fund  issued  by the  Trust.  The  Fund's
investment  objective is to provide high current income and capital appreciation
by investing in  high-quality,  nondollar-denominated  government  and corporate
debt  securities  issued  outside the United States.  The following  significant
accounting  policies,  related to the Fund,  are in accordance  with  accounting
policies generally accepted in the investment company industry.

    SECURITY  VALUATIONS--Portfolio  securities  traded primarily on a principal
securities  exchange are valued at the last reported sales price, or the mean of
the  latest  bid and  asked  prices  where no last  sales  price  is  available.
Securities traded  over-the-counter are valued at the mean of the latest bid and
asked prices or, in the case of certain foreign securities, at the last reported
sales price,  depending on local  convention or regulation.  Debt securities not
traded on a principal securities exchange are valued through valuations obtained
from a commercial  pricing  service or the mean of the most recent bid and asked
prices. When valuations are not readily available, securities are valued at fair
value as  determined  in  accordance  with  procedures  adopted  by the Board of
Trustees.

    SECURITY  TRANSACTIONS--Security  transactions are accounted for on the date
purchased  or  sold.  Net  realized  gains  and  losses  are  determined  on the
identified cost basis, which is also used for federal income tax purposes.

    INVESTMENT  INCOME--Interest  income less foreign taxes withheld (if any) is
recorded  on  the  accrual  basis  and  includes   accretion  of  discounts  and
amortization of premiums.

    FOREIGN  CURRENCY  TRANSACTIONS--The  accounting  records  of the  Fund  are
maintained in U.S. dollars.  All assets and liabilities  initially  expressed in
foreign currencies are converted into U.S. dollars at prevailing exchange rates.
Purchases and sales of investment securities,  dividend and interest income, and
certain  expenses  are  translated  at the rates of exchange  prevailing  on the
respective dates of such transactions.

    Net realized foreign  currency  exchange gains or losses arise from sales of
portfolio  securities,  sales of foreign currencies,  and the difference between
asset and liability amounts initially stated in foreign  currencies and the U.S.
dollar value of the amounts  actually  received or paid. Net unrealized  foreign
currency  exchange  gains or losses arise from changes in the value of portfolio
securities  and other  assets  and  liabilities  resulting  from  changes in the
exchange rates.

    Net  realized  and  unrealized  foreign  currency  exchange  gains or losses
occurring  during the holding period of portfolio  securities are a component of
realized  gain  (loss)  on  foreign   currency   transactions   and   unrealized
appreciation  (depreciation) on translation of assets and liabilities in foreign
currencies, respectively.

    FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS--The Fund may enter into forward
foreign  currency  exchange  contracts  for the  purposes of  settling  specific
purchases or sales of securities  denominated in a foreign  currency or to hedge
the Fund's  exposure  to  foreign  currency  exchange  rate  fluctuations.  When
required,  the Fund will segregate  assets in an amount  sufficient to cover its
obligations  under the hedge  contracts.  The net U.S.  dollar  value of foreign
currency  underlying  all  contractual  commitments  held  by the  Fund  and the
resulting  unrealized  appreciation or depreciation  are determined  daily using
prevailing exchange rates.  Forward contracts involve elements of market risk in
excess of the amount reflected in the Statement of Assets and  Liabilities.  The
Fund bears the risk of an unfavorable  change in the foreign  currency  exchange
rate  underlying  the forward  contract.  Additionally,  losses may arise if the
counterparties do not perform under the contract terms.

    REPURCHASE  AGREEMENTS--The  Fund may enter into repurchase  agreements with
institutions that the Fund's  investment  manager,  American Century  Investment
Management,  Inc. (ACIM),  has determined are creditworthy  pursuant to criteria
adopted by the Board of Trustees. Each repurchase agreement is recorded at cost.
The Fund requires that the collateral,  represented by securities, received in a
repurchase transaction be transferred to the custodian in a manner sufficient to
enable the Fund to obtain those  securities  in the event of a default under the
repurchase  agreement.  ACIM  monitors,  on a  daily  basis,  the  value  of the
securities  transferred to ensure the value,  including accrued interest, of the
securities  under each repurchase  agreement is greater than amounts owed to the
Fund under each repurchase agreement.

    INCOME TAX  STATUS--It is the policy of the Fund to  distribute  all taxable
income and capital gains to shareholders and to otherwise qualify as a regulated
investment  company under provisions of the Internal Revenue Code.  Accordingly,
no provision has been made for federal income taxes.

    DISTRIBUTIONS TO SHAREHOLDERS--Distributions to shareholders are recorded on
the ex-dividend date.  Distributions from net investment income are declared and
paid  quarterly.  Distributions  from net  realized  gains are declared and paid
annually.


ANNUAL REPORT                         NOTES TO FINANCIAL STATEMENTS       13


                         NOTES TO FINANCIAL STATEMENTS

DECEMBER 31, 1997

    The  character  of  distributions  made during the year from net  investment
income or net realized gains may differ from their ultimate characterization for
federal income tax purposes.  These  differences  are primarily due to differing
treatments for foreign  currency  transactions  and wash sales and may result in
reclassification among certain capital accounts.

    USE OF ESTIMATES--The preparation of financial statements in conformity with
generally accepted  accounting  principles requires management to make estimates
and assumptions  that affect the reported  amounts of assets and liabilities and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements,  and the reported  amounts of increases  and decreases in net assets
from operations  during the reporting  period.  Actual results could differ from
those estimates.

    ADDITIONAL INFORMATION--Effective January 15, 1998, Fund's Distributor, Inc.
(FDI) became the Trust's distributor.  Certain officers of FDI are also officers
of the Trust.

- --------------------------------------------------------------------------------
2. TRANSACTIONS WITH RELATED PARTIES

    The  shareholders of the Fund approved a new management  agreement with ACIM
on July 30,  1997,  effective  August 1, 1997,  which  replaced  the  previously
existing  contracts  between  the Fund and  Benham  Management  Corporation  and
American  Century  Services  Corporation  (ACSC)  for  advisory  (including  the
previous  agreement  for the  recoupment  of waived  expenses  by the  advisor),
administrative  and transfer  agency  services.  Under the agreement,  ACIM will
continue  to provide  all  services  required  by the Fund in  exchange  for one
unified  management  fee.  Expenses  excluded from this agreement are brokerage,
taxes, portfolio insurance,  interest, fees and expenses of the Trustees who are
not considered  "interested persons" as defined in the Investment Company Act of
1940 (including  counsel fees) and  extraordinary  expenses.  The annual rate at
which this fee is assessed is determined monthly in a two-step process: First, a
fee rate schedule is applied to the net assets of all of the funds in the Fund's
investment  category which are managed by ACIM (the "Investment  Category Fee").
The overall investment objective of the Fund determines its investment category.
The three  investment  categories are: the Money Market Fund Category,  the Bond
Fund Category and the Equity Fund  Category.  International  Bond is in the Bond
Fund Category. Second, a separate fee rate schedule is applied to the net assets
of all of the funds managed by ACIM (the "Complex Fee"). The Investment Category
Fee and the Complex Fee are then added to determine the unified  management  fee
rate. The management fee is paid monthly based on the Fund's  aggregate  average
daily net assets during the previous month multiplied by the monthly  management
fee rate.  The  annualized  Investment  Category Fee schedule for the Fund is as
follows:

     0.6100% of the first $1 billion 
     0.5580% of the next $1 billion 
     0.5280% of the next $3 billion 
     0.5080% of the next $5 billion 
     0.4950% of the next $15 billion 
     0.4930% of the next $25 billion 
     0.4925% of the net assets over $50 billion

    The annualized Complex Fee schedule is as follows:

     0.3100% of the first $2.5 billion 
     0.3000% of the next $7.5 billion 
     0.2985% of the next $15 billion 
     0.2970% of the next $25 billion 
     0.2960% of the next $50 billion 
     0.2950% of the next $100 billion 
     0.2940% of the next $100 billion 
     0.2930% of the next $200 billion 
     0.2920% of the next $250 billion
     0.2910% of the next $500 billion
     0.2900% of the average daily net assets over $1,250 billion

    Management fees of $641,176 were incurred under the new management agreement
and were  included in Investment  Advisory Fees in the Statement of  Operations.
Total  expenses  (including  amount  recouped by the advisor) and the annualized
ratio of  operating  expenses to average net assets for the seven  months  ended
July 31, 1997 were $1,091,090 and 0.85%, respectively.

    ACIM has entered into a Subadvisory  Agreement with J.P.  Morgan  Investment
Management  (JPMIM)  on behalf  of the Fund.  The  subadvisor  makes  investment
decisions  for the Fund in  accordance  with the Fund's  investment  objectives,
policies,  and  restrictions  under  the  supervision  of ACIM and the  Board of
Trustees.  ACIM pays all costs associated with retaining JPMIM as the subadvisor
of the Fund.

    Certain  officers  and  directors  of the  Trust  are also  officers  and/or
directors,  and,  as a  group,  controlling  stockholders  of  American  Century
Companies, Inc., the parent of the Trust's investment manager, ACIM, the Trust's
transfer  agent,  ACSC,  and  the  registered   broker-dealer  American  Century
Investment Services, Inc.


14      NOTES TO FINANCIAL STATEMENTS          AMERICAN CENTURY INVESTMENTS


                         NOTES TO FINANCIAL STATEMENTS

DECEMBER 31, 1997

- --------------------------------------------------------------------------------
3. INVESTMENT TRANSACTIONS

    Purchases  of  investment  securities,   excluding  short-term  investments,
totaled  $309,742,411.  Sales of  investment  securities,  excluding  short-term
investments,  totaled  $409,282,913.  On  December  31,  1997,  accumulated  net
unrealized  depreciation on investments  was $4,205,347,  based on the aggregate
cost of  investments  for federal  income tax  purposes of  $122,036,517,  which
consisted of unrealized  appreciation of $1,560,211 and unrealized  depreciation
of $5,765,558.


ANNUAL REPORT                         NOTES TO FINANCIAL STATEMENTS       15


<TABLE>
<CAPTION>
                             FINANCIAL HIGHLIGHTS

                 For a Share Outstanding Throughout the Years Ended December 31

                                         1997           1996            1995           1994           1993
PER-SHARE DATA

Net Asset Value,
<S>                                     <C>            <C>             <C>            <C>            <C>   
Beginning of Year ....................  $11.79         $11.95          $10.36         $10.82         $10.01
                                      ----------     ----------     ------------    ----------    -----------
Income From Investment Operations

  Net Investment Income ..............   0.65           0.69            0.61           0.78           0.69

  Net Realized and
  Unrealized Gain (Loss)
  on Investment Transactions .........  (1.34)          0.03            1.88          (0.63)          0.49
                                      ----------     ----------     ------------    ----------    -----------
  Total From
  Investment Operations ..............  (0.69)          0.72            2.49           0.15           1.18
                                      ----------     ----------     ------------    ----------    -----------
Distributions

  From Net Investment Income .........  (0.04)         (0.71)          (0.90)         (0.60)         (0.37)

  In Excess of Net
  Investment Income ..................    --           (0.02)            --             --             --

  From Net Realized Gains
  on Investment Transactions .........  (0.14)         (0.15)            --           (0.01)           --
                                      ----------     ----------     ------------    ----------    -----------
  Total Distributions ................  (0.18)         (0.88)          (0.90)         (0.61)         (0.37)
                                      ----------     ----------     ------------    ----------    -----------
Net Asset Value, End of Year .........  $10.92         $11.79          $11.95         $10.36         $10.82
                                      ==========     ==========     ============    ==========    ===========
  Total Return(1) ....................  (5.88)%         6.38%          24.40%          1.52%         11.79%

RATIOS/SUPPLEMENTAL DATA

Ratio of Operating Expenses
to Average Net Assets ................   0.84%          0.83%           0.82%          0.86%          0.85%

Ratio of Net Investment Income
to Average Net Assets ................   4.82%          5.48%           6.14%          6.09%          6.27%

Portfolio Turnover Rate ..............   163%           242%            167%           166%           310%

Net Assets, End
of Year (in thousands) ............... $165,731       $252,456        $252,247       $194,301       $355,615
</TABLE>

(1)  Total  return   assumes   reinvestment   of  dividends  and  capital  gains
     distributions, if any.

See Notes to Financial Statements


16      FINANCIAL HIGHLIGHTS                   AMERICAN CENTURY INVESTMENTS


                       REPORT OF INDEPENDENT ACCOUNTANTS

To the Trustees and Shareholders of the
American Century-Benham International Bond Fund:


  We  have  audited  the  accompanying  statement  of  assets  and  liabilities,
including the schedule of investments, of American Century-Benham  International
Bond Fund as of December 31,  1997,  and the related  statement  of  operations,
statement of changes in net assets,  and the financial  highlights  for the year
then  ended.  These  financial  statements  and  financial  highlights  are  the
responsibility  of the Fund's  management.  Our  responsibility is to express an
opinion on these  financial  statements  and financial  highlights  based on our
audit.  The  statement  of changes in net assets as of December 31, 1996 and the
financial highlights for each of the four years in the period ended December 31,
1996,  were audited by other  auditors,  whose report,  dated  February 7, 1997,
expressed an unqualified opinion on those statements.


  We  conducted  our  audit  in  accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about  whether the  financial  statements  and  financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  Our  procedures  included  confirmation  of securities  owned as of
December 31, 1997, by  correspondence  with the custodian and brokers.  An audit
also includes assessing the accounting principles used and significant estimates
made by  management,  as well as  evaluating  the  overall  financial  statement
presentation.  We believe  that our audit  provides a  reasonable  basis for our
opinion.


  In our opinion,  the financial statements and financial highlights referred to
above present fairly, in all material  respects,  the financial  position of the
American Century-Benham International Bond Fund as of December 31, 1997, the its
operations,  the  changes  in its net assets and the  financial  highlights  for
results of the year then ended, in conformity with generally accepted accounting
principles.


                                                        Coopers & Lybrand L.L.P.

Kansas City, Missouri
February 10, 1998


ANNUAL REPORT                     REPORT OF INDEPENDENT ACCOUNTANTS       17


                        RETIREMENT ACCOUNT INFORMATION

    As required by law,  any  distributions  you receive from an IRA and certain
403(b)  distributions [not eligible for rollover to an IRA or to another 403(b)]
are subject to federal  income tax  withholding  at the rate of 10% of the total
amount withdrawn,  unless you elect not to have withholding  apply. If you don't
want us to withhold on this amount, you may send us a written notice not to have
the federal  income tax  withheld.  Your written  notice is valid for six months
from the date of receipt at American Century.  Even if you plan to roll over the
amount you withdraw to another tax-deferred  account, the withholding rate still
applies to the withdrawn  amount unless we have received a written notice not to
withhold federal income tax within six months prior to the withdrawal.

    When you plan to  withdraw,  you may make your  election by  completing  our
Exchange/Redemption  form or an IRS Form W-4P. Call American  Century for either
form.  Your  written  election  is valid  for only six  months  from the date of
receipt at American Century. You may revoke your election at any time by sending
a written notice to us.

    Remember,  even if you elect not to have income tax withheld, you are liable
for paying income tax on the taxable  portion of your  withdrawal.  If you elect
not to have income tax  withheld or you don't have enough  income tax  withheld,
you may be  responsible  for payment of estimated  tax. You may incur  penalties
under the estimated tax rules if your withholding and estimated tax payments are
not sufficient.


18      RETIREMENT ACCOUNT INFORMATION         AMERICAN CENTURY INVESTMENTS


                                     NOTES


ANNUAL REPORT                                                 NOTES       19


                            BACKGROUND INFORMATION

INVESTMENT PHILOSOPHY & POLICIES

    The Benham Group  offers 38  fixed-income  funds,  ranging from money market
funds to long-term bond funds and including  both taxable and tax-exempt  funds.
Each fund is  managed  to  provide  a "pure  play" on a  specific  sector of the
fixed-income market. To ensure adherence to this principle,  the basic structure
of each fund's  portfolio  is tied to a specific  market  index.  Fund  managers
attempt  to add  value by making  modest  portfolio  adjustments  based on their
analysis of  prevailing  market  conditions.  Investment  decisions  are made by
management teams, which meet regularly to discuss market analysis and investment
strategies.

    In addition to these principles, each fund has its own investment policies:

    INTERNATIONAL   BOND   invests   in   high-quality,   non-dollar-denominated
government  and corporate debt  securities  outside the U.S. Under normal market
conditions,  the fund will  invest at least 65% of its total  assets in  foreign
government  bonds,  and  it  may  invest  up to  35%  of  its  total  assets  in
high-quality  foreign  corporate bonds. The fund typically  maintains a weighted
average maturity of 2-10 years.

    The fund normally remains fully invested in foreign bonds; however, the fund
may  invest up to 25% of its  assets  in U.S.  securities  when the U.S.  dollar
appears to be strengthening.

    International   investing   involves   special  risks,   such  as  political
instability  and currency  fluctuations.  The fund is not intended to serve as a
complete investment program by itself.

COMPARATIVE INDICES

    The indices listed below are used in the report to serve as fund performance
comparisons. They are not investment products available for purchase.

    The J.P.  MORGAN  ECU-WEIGHTED  EUROPEAN INDEX consists of government  bonds
from nine European countries, weighted by European currency units (ECUs).

    The J.P. MORGAN GLOBAL TRADED  GOVERNMENT BOND INDEX (excluding the U.S. and
with Japan weighted at 15%) consists of foreign bonds from 21 developed  nations
in North America, Europe, Asia and Australia.

LIPPER RANKINGS

    LIPPER  ANALYTICAL  SERVICES,  INC. is an  independent  mutual fund  ranking
service that groups funds according to their investment objectives. Rankings are
based on  average  annual  returns  for each  fund in a given  category  for the
periods indicated. Rankings are not included for periods less than one year.

    The Lipper category for International Bond is:

    INTERNATIONAL  INCOME  FUNDS--funds  that invest in U.S. dollar and non-U.S.
dollar debt securities of issuers located in at least three countries (excluding
the U.S., except in periods of market weakness).

THE FUND'S SUBADVISOR

    J.P. MORGAN INVESTMENT  MANAGEMENT,  INC. (J.P. Morgan) is the subadvisor to
the fund and makes the fund's day-to-day investment decisions.  J.P. Morgan is a
leading  global  financial  services firm with over $200 billion in assets under
management,  primarily  in pension  funds,  institutional  accounts  and private
accounts.  The  subadvisor is a wholly owned  subsidiary  of J.P.  Morgan & Co.,
Incorporated.


INVESTMENT TEAM LEADERS

     Portfolio Managers             Dominic Pegler (J.P. Morgan)
                                    Dave Schroeder


20      BACKGROUND INFORMATION                 AMERICAN CENTURY INVESTMENTS


                                   GLOSSARY

RETURNS

* TOTAL  RETURN  figures  show the overall  percentage  change in the value of a
hypothetical  investment  in  the  fund  and  assume  that  all  of  the  fund's
distributions are reinvested.

* AVERAGE ANNUAL RETURNS  illustrate the annually  compounded returns that would
have produced the fund's cumulative total returns if the fund's  performance had
been  constant  over the  entire  period.  Average  annual  returns  smooth  out
variations  in a fund's  return;  they are not the same as  fiscal  year-by-year
results.  For  fiscal  year-by-year  returns,  please  refer  to the  "Financial
Highlights" on page 16.

PORTFOLIO STATISTICS

* NUMBER OF SECURITIES--the number of different securities held by the fund on a
given date.

*  WEIGHTED  AVERAGE  MATURITY  (WAM)--a  measurement  of the  sensitivity  of a
fixed-income  portfolio to interest rate changes. WAM indicates the average time
until the securities in the portfolio  mature,  weighted by dollar  amount.  The
longer the WAM, the more interest rate  exposure and  sensitivity  the portfolio
has.

*  AVERAGE  DURATION--another  measure  of  the  sensitivity  of a  fixed-income
portfolio to interest rate changes.  Duration is a time-weighted  average of the
interest  and  principal  payments  of the  securities  in a  portfolio.  As the
duration  of a portfolio  increases,  so does the impact of a change in interest
rates on the value of the portfolio.

* EXPENSE RATIO--the  operating expenses of the fund,  expressed as a percentage
of average net assets.  Shareholders pay an annual fee to the investment manager
for  investment  advisory  and  management  services.  The expenses and fees are
deducted from fund income, not from each shareholder account. (See Note 2 in the
Notes to Financial Statements.)

INVESTMENT TERMS

* BASIS POINT--one  one-hundredth  of a percentage  point (or 0.01%).  100 basis
points  equal one  percentage  point (or 1%).  Basis  points are used to clearly
describe  interest rate changes.  For example,  if a news report  indicates that
interest  rates  rose  by 1%,  does  that  mean 1% of the  previous  rate or one
percentage  point?  It is more accurate to state that interest rates rose by 100
basis points.

* COUPON--the stated interest rate of a security.

FOREIGN CURRENCY TERMS

* CURRENCY  FLUCTUATIONS--the movement of foreign currency values in relation to
the U.S.  dollar.  Currency  exchange  rates  come into play when  foreign  bond
income, gains or losses are converted into U.S. dollars, as is required for fund
pricing. Changing currency values may have a greater effect on the fund's return
than changing  foreign  interest rates and bond prices.  When the dollar's value
declines compared to foreign  currencies,  U.S. investors receive higher foreign
bond returns (foreign currencies buy more dollars).  Conversely, when the dollar
is stronger,  U.S. investors generally receive lower returns (foreign currencies
buy fewer dollars).

* CURRENCY  HEDGING--a  strategy used to offset  fluctuations  in the value of a
currency.  For example,  if the fund  managers  expect the dollar to  strengthen
against foreign currencies,  they might choose to invest (or hedge) a portion of
the fund's securities in U.S. dollars to offset the expected currency losses.


ANNUAL REPORT                                              GLOSSARY       21

[american century logo]
American
Century(reg.sm)

P.O. BOX 419200
KANSAS CITY, MISSOURI
64141-6200

INVESTOR SERVICES:
1-800-345-2021 OR 816-531-5575

AUTOMATED INFORMATION LINE:
1-800-345-8765

TELECOMMUNICATIONS DEVICE FOR THE DEAF:
1-800-634-4113 OR 816-444-3485

FAX: 816-340-7962

INTERNET: WWW.AMERICANCENTURY.COM


AMERICAN CENTURY INTERNATIONAL BOND FUNDS


INVESTMENT MANAGER
AMERICAN CENTURY INVESTMENT MANAGEMENT, INC.
KANSAS CITY, MISSOURI


THIS  REPORT AND THE  STATEMENTS  IT  CONTAINS  ARE  SUBMITTED  FOR THE  GENERAL
INFORMATION OF OUR  SHAREHOLDERS.  THE REPORT IS NOT AUTHORIZED FOR DISTRIBUTION
TO  PROSPECTIVE  INVESTORS  UNLESS  PRECEDED  OR  ACCOMPANIED  BY  AN  EFFECTIVE
PROSPECTUS.


(c) 1998 AMERICAN CENTURY SERVICES CORPORATION  FUNDS DISTRIBUTOR, INC.


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