AMERICAN CENTURY INTERNATIONAL BOND FUNDS
N-30D, 1998-08-26
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[front cover]                                                     June 30, 1998

SEMIANNUAL REPORT
- -----------------
AMERICAN CENTURY

               [graphic of people, stairs, building, figures]

BENHAM GROUP
- -----------------------
INTERNATIONAL BOND

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


A Note from the Founder
- --------------------------------------------------------------------------------

     On our 40th  anniversary,  I would  personally  like to express my profound
appreciation  for the  confidence  you have shown in  American  Century.  We are
grateful for the opportunity to manage your money,  and we will do our utmost to
continue to meet your expectations and justify your confidence in us.

     I  founded  American  Century  on  the  belief  that  if we  can  make  you
successful,  you, in turn,  will make us successful.  That is the principle that
will guide us in the future.

     Sincerely,
     /s/James E. Stowers


About our New Report Design
- --------------------------------------------------------------------------------

Why We Changed

We're trying hard to be reader-friendly.  Our reports contain a lot of very good
information, from fund statistics and financials to Q&A's with fund managers. We
hope the new design will make the reports more  interesting  and  understandable
while helping you keep abreast of your fund's strategy and performance.

What's New

The reports are designed to be attractive and easy to use whether you're reading
them in depth or just skimming.

     New features include:

* Larger type size in many sections.
* Brief explanations of the financial statements.
* More prominent graphs and charts.
* Quotes in the margins to highlight report content.

THE BOTTOM LINE.

The new design  actually  costs  slightly less than the old one. We  reallocated
costs and eliminated a cover letter and the envelope that  previously  came with
your  report  enclosed.  This not only saves  money,  but  reduces the number of
mailing pieces you receive.

The new  reports  also use  roughly  the same  amount  of paper as the old ones.
Previously,  paper was trimmed  and thrown  away to produce  the smaller  report
size.

We believe we've come up with a more interesting,  informative and user-friendly
publication.

We hope you enjoy it.

[left margin]

Benham Group
International Bond
(BEGBX)

[40 Years logo]
Four Decades of Serving Investors
40 Years
American Century
1958-1998


Our Message to You
- --------------------------------------------------------------------------------
/photo of James E. Stowers III and James E. Stowers, Jr./
James E. Stowers III, seated, with James E. Stowers, Jr.


     International  bonds  performed  well  during  the  first  half  of 1998 as
interest  rates  fell  worldwide.  Fallout  from the  financial  crisis  in Asia
tempered  economic growth in much of the world and kept price inflation  low--an
excellent environment for bonds.

     For U.S. investors,  though,  foreign bond returns were reduced by currency
fluctuations.  The  dollar's  continued  strength  against  most of the  world's
currencies weakened overseas returns when they were converted into dollars.

     One of the benefits of investing in International Bond is that you get full
exposure to a variety of foreign  currencies  as insurance  against a decline in
the dollar's value. In order to retain this currency diversification, we widened
International Bond's investment  parameters at the beginning of 1998. Instead of
focusing  exclusively on European bonds, the fund can now invest in foreign bond
markets in North America, Asia, and Australia as well.

     This  broader  scope will  become more  important  in 1999,  when  European
economic and monetary  union (EMU) unites 11 countries  with a single  currency.
Under  International  Bond's old policy of investing  only in Europe,  EMU would
have severely limited the fund's currency diversification. However, the expanded
investment  universe  enables  International  Bond to maintain its exposure to a
diversified  mix of currencies.  (The  management  team talks more about EMU and
currency diversification in the Q&A beginning on page 5.)

     International Bond also has a new distribution policy that became effective
earlier this year. International Bond paid a capital gains distribution in March
1998 as well as in December 1997. The fund will continue on this March- December
capital gains distribution schedule going forward. The March distribution allows
the fund to promptly distribute capital gains realized between the IRS's October
31  deadline  for  December  distributions  and the  fund's  December  31 fiscal
year-end.

     We understand  how important it is for you to follow the strategies of your
fund  management  team and  track the  progress  of your  investments.  For that
reason,  we hope you like the new design of this report.  It's  intended to make
the important information you need about our funds more accessible.

     We appreciate your investment with American Century.

Sincerely,

/s/James E. Stowers, Jr.                 /s/James E. Stowers III
James E. Stowers, Jr.                    James E. Stowers III
Chairman of the Board and Founder        Chief Executive Officer


[right margin]

           Table of Contents
   Report Highlights .......................................................   2
   Market Perspective ......................................................   3
INTERNATIONAL BOND
   Performance Information .................................................   4
   Management Q&A ..........................................................   5
   Schedule of Investments .................................................   8
FINANCIAL STATEMENTS
   Statement of Assets and
   Liabilities .............................................................  10
   Statement of Operations .................................................  11
   Statements of Changes
   in Net Assets ...........................................................  12
   Notes to Financial
   Statements ..............................................................  13
   Financial Highlights ....................................................  15
OTHER INFORMATION
   Retirement Account
   Information .............................................................  16
   Background Information
      Investment Philosophy
      and Policies .........................................................  17
      Comparative Indices ..................................................  17
      Lipper Rankings ......................................................  17
      Investment Team
      Leaders ..............................................................  17
      The Fund's Subadvisor ................................................  17
   Glossary ................................................................  18


                                                  www.americancentury.com      1


Report Highlights
- --------------------------------------------------------------------------------

MARKET PERSPECTIVE

*   International  bonds produced solid returns during the first half of 1998 as
    interest rates declined around the globe.

*   The strong dollar reduced foreign bond returns modestly for U.S. investors.

*   Rates fell as a result of the Asian  financial  meltdown,  which kept global
    inflation low and sparked demand for bonds as a safe haven.

MANAGEMENT Q&A

*   International Bond beat the average  international income fund and performed
    in line with its benchmark for the first half of 1998.

*   We made the following adjustments to the fund's portfolio:

    *   Lengthened its duration (a measure of interest rate sensitivity) to take
        advantage of falling interest rates.

    *   Overweighted Swedish and British bond markets early in the year.

    *   Shifted from an emphasis on Sweden and the U.K. to Germany and
        France by June as relative values changed.

*   We have a negative  outlook on the Japanese bond market,  so we have reduced
    our holdings there since the end of June.

*   We plan to maintain  our  neutral  weighting  in Europe and a slightly  long
    duration relative to the benchmark.

EMU UPDATE

*   European  economic and monetary union (EMU) is on schedule to begin in 1999,
    with eleven countries joining together under a single currency.

*   Bond yields among EMU countries have converged and are now moving in tandem.

*   The  euro,  which  will  essentially  replace  11  currencies,  will  reduce
    International  Bond's overall currency  diversification.  However, we expect
    the euro to be a strong and stable international currency.

*   EMU has already been priced into the  European  bond  markets,  though there
    will be some currency logistics to resolve at year-end.

*   Existing  bonds will switch from the issuing  country's  currency to the new
    euro currency, and all new bonds issued by EMU countries will be denominated
    in the euro.

*   We now view EMU  countries  as one big market when  comparing  values  among
    foreign bonds.


[left margin]

"INTERNATIONAL BOND BEAT THE AVERAGE INTERNATIONAL INCOME FUND AND PERFORMED IN
LINE WITH ITS BENCHMARK FOR THE FIRST HALF OF 1998."

            INTERNATIONAL BOND
                  (BEGBX)
TOTAL RETURNS:               AS OF 6/30/98
    6 Months                        3.02%*
    1 Year                           4.40%
NET ASSETS:                 $142.5 million
INCEPTION DATE:                     1/7/92

* Not annualized.

See Total Returns on page 4.
Investment terms are defined in the Glossary on page 18.


2       1-800-345-2021

Market Perspective from Randall W. Merk
- --------------------------------------------------------------------------------

/photo of Randall W. Merk/
Randall W. Merk, director of fixed-income investing at American Century

FAVORABLE RETURNS

     International bonds produced solid returns during the first half of 1998 as
interest rates declined around the globe. The Salomon Non-U.S.  World Government
Bond Index (WGBI)  returned  4.32% in local  currencies for the six months ended
June 30, 1998.

     For U.S.  investors,  the strong U.S.  dollar reduced foreign bond returns.
The dollar rose about 1% in value against most major European currencies, and it
surged by more than 6% against the Japanese yen. As a result,  bond gains earned
in foreign currencies were worth less in dollar terms--the Salomon Non-U.S. WGBI
returned just 2.09% when translated  into U.S.  dollars.  However,  the dollar's
strength has been much milder in 1998 than in the past several years.

THE EFFECTS OF ASIA

     The main  reason  that  interest  rates fell  worldwide  was the  spreading
effects of the financial meltdown in Asia. In mid-1997,  a currency crisis among
Southeast Asian  countries  pushed their economies into recession and sent their
financial markets into freefall. Since then, the effects of this crisis have had
a growing impact on the rest of the world.

     A lack of  consumer  demand in Asia has reduced  economic  activity in many
countries that export to the region.  Japan, a close Asian trading  partner,  is
Randall W. Merk, director of fixed-income taking the biggest hit, but Europe and
North  America  are also  feeling  the  effects.  In  addition,  the  crisis has
contributed to low global  inflation--Asian  countries,  in an effort to rebuild
their economies,  have cut prices on their exports,  and this has held prices in
check throughout the world.

     The  prospects of slower  growth and low  inflation  have been positive for
global fixed-income  markets,  pushing bond yields lower and bond prices higher.
Bonds have also benefited from a "flight to quality" as investors  fleeing Asian
markets  looked to bonds  elsewhere in the world as a safe haven.  Although this
has occurred  primarily in the U.S.,  European  bond markets have also seen some
safe-haven demand.

EMU UPDATE

     Plans for  European  economic and  monetary  union (EMU) were  finalized in
April.  Eleven European  countries (see the list at right) will join together in
1999 under a common currency and a single central bank. Exchange rates have been
established  between the  currencies  of the member  countries  and the new euro
currency.

     The biggest  story in the  European  bond  markets  over the past couple of
years  has been the  convergence  of bond  yields  among EMU  countries.  As the
accompanying  graph shows,  yields  finally came together at the end of 1997. So
far in 1998,  the bond yields of EMU member  countries  have moved in tandem and
are acting as if EMU is already in place.


[right margin]

"THE MAIN REASON THAT INTEREST RATES FELL WORLDWIDE WAS THE SPREADING EFFECTS OF
THE FINANCIAL MELTDOWN IN ASIA."

EMU MEMBER COUNTRIES
    AUSTRIA          ITALY
    BELGIUM          LUXEMBOURG
    FINLAND          NETHERLANDS
    FRANCE           PORTUGAL
    GERMANY          SPAIN
    IRELAND

[line chart - data below]

CONVERGING 10-YEAR NOTE YIELDS
               Germany        Italy         Spain
1/31/96         5.98%         10.00%        9.54%
2/29/96         6.40%         10.33%        9.68%
3/31/96         6.44%         10.59%        9.75%
4/30/96         6.36%         9.59%         9.13%
5/31/96         6.61%         9.46%         9.24%
6/30/96         6.62%         9.23%         9.00%
7/31/96         6.61%         9.32%         8.95%
8/31/96         6.48%         9.39%         8.88%
9/30/96         6.18%         8.46%         7.98%
10/31/96        6.10%         8.20%         7.83%
11/30/96        5.74%         7.55%         7.05%
12/31/96        5.97%         7.52%         6.89%
1/31/97         5.80%         7.35%         6.76%
2/28/97         5.62%         7.74%         7.01%
3/31/97         5.98%         8.02%         7.16%
4/30/97         5.85%         7.71%         6.89%
5/31/97         5.99%         7.54%         6.75%
6/30/97         5.79%         7.00%         6.42%
7/31/97         5.60%         6.63%         6.22%
8/31/97         5.74%         6.84%         6.39%
9/30/97         5.57%         6.22%         5.93%
10/31/97        5.62%         6.26%         6.05%
11/30/97        5.49%         5.91%         5.79%
12/31/97        5.42%         5.63%         5.63%
1/31/98         5.13%         5.47%         5.35%
2/28/98         5.00%         5.33%         5.19%
3/31/98         4.97%         5.19%         5.11%
4/30/98         5.05%         5.23%         5.17%
5/31/98         4.93%         5.15%         5.08%
6/30/98         4.84%         5.10%         5.05%

Source: Salomon Brothers Yield Book


                                                  www.americancentury.com      3


International Bond--Performance
- --------------------------------------------------------------------------------

TOTAL RETURNS AS OF JUNE 30, 1998
                                         INCEPTION 1/7/92
                      INTERNATIONAL    FUND       INTERNATIONAL INCOME FUNDS(2)
                          BOND      BENCHMARK(+) AVERAGE RETURN   FUND'S RANKING
- --------------------------------------------------------------------------------
6 MONTHS(1) ..........   3.02%        3.12%          2.78%             --
1 YEAR ...............   4.40%        4.68%          3.67%        19 OUT OF 54
- --------------------------------------------------------------------------------
AVERAGE ANNUAL RETURNS
3 YEARS ..............   3.16%        3.51%          5.56%        25 OUT OF 38
5 YEARS ..............   7.01%        7.90%          5.96%         6 OUT OF 16
LIFE OF FUND .........   7.10%        6.91%         6.90%(3)      4 OUT OF 10(3)

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

(2) According to Lipper Analytical Services,  an independent mutual fund ranking
    service.

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

See pages 17-18 for more information about returns,  the fund's  benchmark,  and
Lipper fund rankings.

[mountain chart - data below]

GROWTH OF $10,000 OVER LIFE OF FUND
Value on 6/30/98
J.P. Morgan ECU Index       $15,780
International Bond          $15,593
Fund Benchmark +            $15,424

            J.P. Morgan      International        Fund
             ECU Index           Bond           Benchmark+
DATE         ACCT VALUE        ACCT VALUE       ACCT VALUE
1/7/92        $10,000           $10,000          $10,000
Mar-92        $9,386            $9,736           $9,386
Jun-92        $10,391           $10,731          $10,391
Sep-92        $11,050           $11,501          $11,050
Dec-92        $10,120           $10,708          $10,120
Mar-93        $10,610           $11,179          $10,610
Jun-93        $10,548           $11,114          $10,548
Sep-93        $11,218           $11,992          $11,218
Dec-93        $11,200           $11,970          $11,200
Mar-94        $11,317           $11,871          $11,317
Jun-94        $11,528           $11,971          $11,528
Sep-94        $11,749           $12,050          $11,749
Dec-94        $11,863           $12,152          $11,863
Mar-95        $13,543           $13,834          $13,543
Jun-95        $13,906           $14,202          $13,906
Sep-95        $14,188           $14,393          $14,188
Dec-95        $14,906           $15,117          $14,906
Mar-96        $14,633           $14,834          $14,633
Jun-96        $14,700           $14,881          $14,700
Sep-96        $15,257           $15,491          $15,257
Dec-96        $15,798           $16,082          $15,798
Mar-97        $14,759           $14,992          $14,759
Jun-97        $14,735           $14,938          $14,735
Sep-97        $14,833           $15,100          $14,833
Dec-97        $14,957           $15,138          $14,957
Mar-98        $15,457           $15,259          $15,056
Jun-98        $15,780           $15,593          $15,424

$10,000 investment made 1/7/92

ONE-YEAR RETURNS OVER LIFE OF FUND (PERIODS ENDED JUNE 30)

         International        Fund
             Bond           Benchmark+
6/92*        7.31%            3.91%
6/93         3.57%            1.51%
6/94         7.71%            9.29%
6/95         18.63%           20.63%
6/96         4.78%            5.71%
6/97         0.28%            0.18%
6/98         4.40%            4.68%

The chart at left shows the growth of a $10,000  investment over the life of the
fund,  while the chart  below  shows the fund's  year-by-year  performance.  The
fund's  benchmark(+)  is provided for  comparison  in each chart.  International
Bond's  returns  include  operating  expenses  (such as  transaction  costs  and
management  fees) that  reduce  returns,  while the returns of the index do not.
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.

(+) From the fund's  inception to December 31, 1997,  the benchmark was the J.P.
    MORGAN ECU-WEIGHTED EUROPEAN INDEX. Since January 1, 1998, the benchmark has
    been the J.P.  MORGAN GLOBAL TRADED BOND INDEX  (excluding the U.S. and with
    Japan weighted at 15%).

*   From the fund's 1/7/92 inception date to 6/30/92.


4       1-800-345-2021


International Bond--Q&A
- --------------------------------------------------------------------------------

     An interview with Dominic Pegler, a portfolio  manager on the International
Bond fund management team.

HOW DID THE FUND PERFORM DURING THE FIRST HALF OF 1998?

     International  Bond's return was consistent with the performance of foreign
bond  markets in  general.  For the six months  ended  June 30,  1998,  the fund
returned 3.02%, compared with the 3.12% return of its benchmark, the J.P. Morgan
Global Traded  Government Bond Index (excluding the U.S. and with Japan weighted
at 15%).

     International  Bond  outperformed  the  2.78%  average  return  of  the  55
"International  Income Funds" tracked by Lipper  Analytical  Services.  (See the
Total  Returns   table  on  the  previous   page  for  other  fund   performance
comparisons.)

HOW WAS THE FUND POSITIONED?

     One of the most  significant  positioning  changes we made to the portfolio
was to increase its duration. Duration is a measure of the fund's sensitivity to
changes in interest rates.  The longer the fund's  duration,  the more its share
price rises when rates fall, but the more the share price drops when rates rise.
Conversely, a shorter duration means the fund's share price fluctuates less when
rates change.

     We lengthened  International  Bond's duration because we expected the Asian
crisis  to  cause  interest  rates  to fall  worldwide.  We also  believed  that
longer-term  bonds would  perform  better  than  shorter-term  securities.  As a
result, we purchased some long-maturity  bonds in Japan,  Europe (mainly Germany
and France), and Canada.

     These  investments  caused our  duration to extend from around 4.5 years at
the end of 1997 to about six years by March  1998.  By June,  however,  interest
rates had declined  quite a bit, so we eased duration back to a more neutral 5.3
years.

AS OF JUNE 30, ABOUT 20% OF THE PORTFOLIO WAS IN CASH. WHY?

     It was part of our  strategy to  lengthen  duration.  International  Bond's
benchmark  has a duration  of around  5.5  years,  and we try to keep the fund's
duration close to this level.  The long-term  securities we bought had durations
of more than 10 years,  so we purchased cash  equivalents,  which have extremely
short durations, to balance things out.

     Although the cash  equivalents were U.S.  government  agency notes, we used
forward currency contracts to maintain non-dollar exposure.

HOW DO FORWARD CURRENCY CONTRACTS WORK?

     Basically,  we agree to buy or sell a currency at a prearranged  price on a
specific  future  date.  For  example,  we might enter into an agreement to sell
German marks and buy Japanese yen three months from now. It gives us exposure to
a  particular  currency  without  having  any  investments  denominated  in  the
currency.

WHY DO YOU USE CURRENCY CONTRACTS?

     It gives us more  flexibility  and  makes it  easier  to  provide  currency
diversification  for our shareholders.  One of International  Bond's goals is to
provide broad exposure to currencies other than the U.S.  dollar.  We manage the
fund's currency exposure to closely match that of the benchmark.

[right margin]

"INTERNATIONAL BOND'S RETURN WAS CONSISTENT WITH THE PERFORMANCE OF FOREIGN BOND
MARKETS IN GENERAL."

PORTFOLIO AT A GLANCE
                              6/30/98          12/31/97
NUMBER OF SECURITIES            17                25
WEIGHTED AVERAGE
MATURITY                      7.7 YRS           6.3 YRS
AVERAGE DURATION              5.3 YRS           4.3 YRS
EXPENSE RATIO                 0.88%*             0.84%

* Annualized.

"WE  LENGTHENED  INTERNATIONAL  BOND'S  DURATION  BECAUSE WE EXPECTED  THE ASIAN
CRISIS TO CAUSE INTEREST RATES TO FALL WORLDWIDE."

Investment terms are defined in the Glossary on page 18.


                                                  www.americancentury.com      5


International Bond--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

     However,  we often  overweight or  underweight  foreign bond markets in the
fund's  portfolio.  For  example,  Japan  and  Germany  each  make up 15% of the
benchmark, but at the end of June, International Bond had 5% of its portfolio in
Japanese  bonds  and 24% in German  bonds.  To bring  the  portfolio's  currency
weightings back in line with the benchmark,  we used forward currency  contracts
to sell German marks and buy Japanese yen.

     Ultimately,  forward  currency  contracts help us maintain a fairly stable,
diversified currency mix while we try to add value through modest adjustments to
the fund's duration and bond market weightings.

WHAT CHANGES DID YOU MAKE TO THE FUND'S BOND MARKET WEIGHTINGS?

     At the start of 1998,  we were  overweighted  relative to the  benchmark in
Sweden and the U.K.,  which we felt  offered the most  attractive  bond  values.
Meanwhile,  we  were  underweighted  in  "core"  Europe  (Germany,  France,  the
Netherlands), and we had taken neutral positions in Japan, Canada and Australia,
where the fund was investing for the first time.

     Swedish  bonds  performed so well in the first  quarter that they no longer
looked attractive,  so we sold all of our investments there. Unexpectedly strong
economic growth in the U.K. led us to cut back our holdings to around neutral.

     We moved some of these assets into German and French bonds, which were most
likely to benefit from the "flight to quality" out of Asia.  We shifted the rest
into cash equivalents to balance duration.

LOOKING AHEAD, WHAT'S YOUR OUTLOOK FOR INTERNATIONAL BOND MARKETS?

     We're a little  negative on the Japanese  bond market.  Bond returns  there
depend on whether the  authorities  do anything  meaningful  about the country's
banking  crisis or economic  problems.  Japanese  interest  rates can't get much
lower than they already are,  and any  progress  Japan makes toward  solving its
problems would likely cause rates to rise, hurting bond prices.

     We expect the Japanese government to put together a substantial  rebuilding
package,  which will almost certainly  include reform measures for its financial
system. Once the plan is announced,  however, we'll have to wait and see whether
it produces any results.

     Europe should take a bit of a back seat in the global fixed-income markets.
With the fallout  from Asia  keeping  inflation  and  economic  growth at modest
levels, we believe that European bond markets are about where they should be, at
fair value.

WHAT ABOUT EMU? HOW WILL IT AFFECT THE  EUROPEAN  BOND MARKETS WHEN IT BEGINS IN
1999?

     It's already been priced into the markets. Bond yields in EMU countries are
very  close  together  and  already  tend to move as a bloc.  There will be some
currency  logistics  as the euro becomes the de facto  currency  for  EMU-member
bonds,  and it will be  interesting  to see how the transition to fixed exchange
rates goes at the end of this year, but everything else should  generally remain
the same.


[left margin]

"AT THE START OF 1998, WE WERE OVERWEIGHTED  RELATIVE TO THE BENCHMARK IN SWEDEN
AND THE U.K., WHICH WE FELT OFFERED THE MOST ATTRACTIVE BOND VALUES."

BOND HOLDINGS BY COUNTRY
                              % OF FUND INVESTMENTS
                             AS OF              AS OF
                            6/30/98           12/31/97
FRANCE                        28%                17%

GERMANY                       24%                26%

U.S. (TEMPORARY
     CASH INVESTMENTS)        21%                --

UNITED KINGDOM                10%                31%

DENMARK                        5%                 4%

CANADA                         5%                --

JAPAN                          5%                --

SPAIN                          2%                 2%

SWEDEN                        --                 10%

NETHERLANDS                   --                  8%

SWITZERLAND                   --                  2%


6       1-800-345-2021


International Bond--Q&A
- --------------------------------------------------------------------------------
                                                                    (Continued)

WHAT WILL HAPPEN TO EXISTING BONDS ISSUED BY EMU COUNTRIES?

     The only change will be the currency  denomination,  which will switch from
the "home" currency to the euro. All existing bonds,  and any new ones issued by
EMU member countries,  will be denominated in the euro. Although the EMU has its
own central bank, it will not issue any bonds as an entity.

HOW WILL EMU AFFECT YOUR MANAGEMENT OF THE FUND?

     It's  already  changed  the way we look at  Europe.  Instead  of looking at
Germany,  France,  Italy,  and other EMU  countries as distinct  markets,  we've
started to look at them as one big market. We now compare the relative values of
the EMU  "market"  with Japan,  Canada,  and the  European  markets  outside the
EMU--mainly Sweden, Denmark and the U.K.

     The other  interesting  thing  about EMU is the  effect it will have on the
global  economy.  The EMU will become the  second-largest  economy in the world,
bigger than Japan. And if other European countries join EMU down the road--as we
expect the U.K., Sweden,  Denmark, and Greece to do in the next five years--then
it will surpass the U.S. as the largest economy on the planet.

     This has profound  implications for worldwide  commerce.  EMU will give the
Continent a great deal of economic  clout in the global  marketplace.  We expect
the  euro  to join  the  dollar  as a  major  currency  used  for  international
transactions and held in reserve by the world's central banks.

HOW WILL THE EURO AFFECT THE FUND'S CURRENCY DIVERSIFICATION?

     The fund  will  certainly  be  exposed  to fewer  currencies,  since  we're
essentially  replacing  eleven  currencies with one. As the  accompanying  chart
shows, about 60% of the benchmark will be denominated in the euro as of 1999.

     But  you're  not  actually  losing as much  diversification  as you  think.
Historically,  the currencies of several  countries--including  France, Belgium,
the Netherlands, Luxembourg, and Austria--tended to move in sync with the German
mark.  So, the  currencies of more than half of the EMU  countries  were already
tightly linked before the euro came along.

     Another  factor that will help offset the loss of currency  diversification
is the strength of the euro  itself.  We expect the euro to provide a great deal
of  stability  and be on a par with the U.S.  dollar and  Japanese  yen as major
international currencies.

WHAT ARE YOUR PLANS FOR INTERNATIONAL BOND OVER THE LAST HALF OF THE YEAR?

     With regard to bond market  weightings,  we plan to underweight  Japan,  at
least over the near term.  Since the end of June, we've sold our holdings there.
We'll likely remain neutral in Europe and Canada for the time being.

     We'll also look to maintain a longer  duration  relative to the  benchmark.
Recently,  concerns  about Russia and China have renewed the "flight to quality"
toward  government  bonds in developed  markets.  We think the fund will benefit
from this trend.


[right margin - ]

"INSTEAD  OF LOOKING AT  GERMANY,  FRANCE,  ITALY,  AND OTHER EMU  COUNTRIES  AS
DISTINCT MARKETS, WE'VE STARTED TO LOOK AT THEM AS ONE BIG MARKET."

EFFECTS OF THE EURO ON THE CURRENCY  WEIGHTINGS  OF THE FUND'S  BENCHMARK  (J.P.
MORGAN GLOBAL TRADED  GOVERNMENT  BOND INDEX,  EXCLUDING THE U.S. AND WITH JAPAN
WEIGHTED AT 15%)

GERMANY            16% \
FRANCE             15%  \
ITALY              12%   \ EURO
SPAIN               6%   / 60%
NETHERLANDS         6%  /
BELGIUM             5% /

JAPAN              15%
U.K.               13%
CANADA              5%
SWEDEN              3%
DENMARK             3%
AUSTRALIA           1%


                                                  www.americancentury.com      7


International Bond--Schedule of Investments
- --------------------------------------------------------------------------------

JUNE 30, 1998 (UNAUDITED)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------
GOVERNMENT BONDS
CANADA--4.7%
CAD                       3,220,000  Government of Canada,
                                         7.00%, 12/01/06              $2,432,777
                          3,800,000  Government of Canada,
                                         8.00%, 6/01/23                3,448,433
                                                                  --------------
                                                                       5,881,210
                                                                  --------------
DENMARK--5.1%
DKK                      36,700,000  Kingdom of Denmark,
                                         8.00%, 3/15/06                6,375,816
                                                                  --------------
FRANCE--22.5%
FRF                        900,000   Caisse Amort Dette Societe,
                                         6.25%, 10/25/07                 163,420
                       108,150,000   Government of France,
                                         5.50%, 4/25/07               18,771,827
                        52,570,000   Government of France,
                                         6.00%, 10/25/25               9,463,121
                                                                  --------------
                                                                      28,398,368
                                                                  --------------
GERMANY--23.6%
DEM                     15,050,000   German Federal Republic,
                                         6.75%, 4/22/03                9,158,950
                        12,250,000   German Federal Republic,
                                         6.00%, 7/4/07                 7,380,376
                         6,560,000   German Federal Republic,
                                         6.25%, 1/4/24                 4,092,057
                         7,600,000   Kredit Fuer Wiederaufbau
                                         International Finance,
                                         6.75%, 6/20/05                4,698,732
                         7,300,000   Tennessee Valley Authority
                                         Global Bond, 6.375%,
                                         9/18/06                       4,423,961
                                                                  --------------
                                                                      29,754,076
                                                                  --------------
JAPAN--5.6%
JPY                    902,000,000   Government of Japan,
                                         2.60%, 3/20/07                7,094,412
                                                                  --------------
SPAIN--1.6%
ESP                    261,560,000   Government of Spain,
                                         7.35%, 3/31/07                1,988,807
                                                                  --------------
UNITED KINGDOM--10.5%
GBP                      1,870,000   United Kingdom Treasury,
                                         8.50%, 12/07/05               3,574,648
                         5,240,000   United Kingdom Treasury,
                                         7.50%, 12/07/06               9,627,368
                                                                  --------------
                                                                      13,202,016
                                                                  --------------
TOTAL GOVERNMENT BONDS--73.6%                                         92,694,705
                                                                  --------------
   (Cost $92,367,683)

Principal Amount                                                        Value
- --------------------------------------------------------------------------------
CORPORATE BONDS--5.5%
FRF                      41,000,000  CETELEM EOS, 6.30%,
                                         11/24/99                     $6,977,715
                                                                  --------------
   (Cost $8,310,853)

SHORT-TERM CASH INVESTMENTS--20.9%
                        $26,250,000  FHLB Discount Notes,
                                         5.55%, 7/1/98(1)             26,250,000
                                                                  --------------
   (Cost $26,250,000)

TOTAL INVESTMENT SECURITIES--100.0%                                 $125,922,420
                                                                  ==============
   (Cost $126,928,536)

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS

                              Settlement                           Unrealized
      Contracts to Sell          Dates           Value             Gain (Loss)
- -----------------------------------------------------------------------------
         16,598,804  AUD        9/24/98        $10,314,499          $517,165
        299,782,413  BEF        9/24/98        8,099,294              26,619
          8,250,327  CAD        9/24/98        5,615,577              25,643
          9,358,975  CHF        9/24/98        6,232,747             203,076
         71,642,416  DEM        9/24/98        39,926,334              5,869
         62,698,663  DEM       12/18/98        35,107,089            118,858
         15,961,955  DKK        9/24/98        2,332,071             (6,075)
         15,961,955  DKK       12/18/98        2,341,130               9,154
      1,131,354,393  ESP        9/24/98        7,400,141              45,893
        201,425,678  FRF        9/24/98        33,484,668           (39,384)
         77,227,540  FRF       12/18/98        12,898,462             42,048
         18,485,295  GBP        9/24/98        30,718,207          (168,591)
            919,825  GBP       12/18/98        1,521,156             (1,150)
     31,572,298,006  ITL        9/24/98        17,795,391             65,126
      1,980,964,742  JPY        9/24/98        14,506,239             53,518
        479,033,901  JPY       12/18/98        3,552,433             266,091
         18,509,120  NLG        9/24/98        9,152,415              31,357
          4,136,517  NZD        9/24/98        2,140,648             173,940
         36,299,028  SEK        9/24/98        4,566,806              15,585
                                          ------------------------------------
                                             $247,705,307         $1,384,742
                                          ====================================
(Value on Settlement Date $249,090,049)

                                              See Notes to Financial Statements


8       1-800-345-2021


International Bond--Schedule of Investments
- --------------------------------------------------------------------------------
                                                                    (Continued)
JUNE 30, 1998 (UNAUDITED)
                              Settlement                           Unrealized
      Contracts to Buy           Dates           Value             Gain (Loss)
- ------------------------------------------------------------------------------
         16,598,804  AUD        9/24/98        $10,314,499         $(387,784)
          3,997,063  AUD       12/18/98        2,486,718              54,805
        299,782,413  BEF        9/24/98        8,099,294              54,036
        261,028,995  BEF       12/18/98        7,085,644            (20,473)
          8,250,327  CAD        9/24/98        5,615,577           (236,008)
          2,102,205  CAD       12/18/98        1,432,630               1,682
          9,358,975  CHF        9/24/98        6,232,747           (109,908)
        121,509,482  DEM        9/24/98        67,717,291          (263,639)
         15,961,955  DKK        9/24/98        2,332,071             (9,078)
      1,131,354,393  ESP        9/24/98        7,400,141              43,653
        998,531,266  ESP       12/18/98        6,555,777            (39,106)
        187,944,073  FRF        9/24/98        31,243,508           (79,406)
         23,055,247  GBP        9/24/98        38,312,391          (268,262)
     31,572,298,006  ITL        9/24/98        17,795,391            175,782
     29,626,412,797  ITL       12/18/98        16,748,623           (62,120)
      2,712,603,528  JPY        9/24/98        19,863,894          (357,710)
      1,511,338,100  JPY       12/18/98        11,207,825           (11,914)
         18,509,120  NLG        9/24/98        9,152,415              61,268
         16,338,472  NLG       12/18/98        8,118,854            (25,643)
          4,136,517  NZD        9/24/98        2,140,648           (126,164)
         36,299,028  SEK        9/24/98        4,566,806            (12,820)
         34,579,753  SEK       12/18/98        4,366,461             (7,733)
                                          -------------------------------------
                                             $288,789,205       $(1,626,542)
                                          =====================================
(Value on Settlement Date $290,415,747)

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

FHLB = Federal Home Loan Bank

FRF = French Franc

GBP = British Pound

ITL = Italian Lira

JPY = Japanese Yen

NLG = Netherlands Guilder

NZD = New Zealand Dollar

SEK = Swedish Krona

(1) The rates for U.S.  Government  Agency discount notes represent the yield to
    maturity at purchase.

- --------------------------------------------------------------------------------
UNDERSTANDING  THE  SCHEDULE  OF  INVESTMENTS--This  schedule  tells  you  which
investments your fund owned on the last day of the reporting period.

The schedule includes:

* a list of each investment

* the principal amount of each investment

* the market value of each investment

* the percentage of investments in each country

* the percent and dollar breakdown of each investment category

* a list of forward  currency  contracts,  which are  agreements  to buy or sell
  currencies at a prearranged price on a specific future date

See Notes to Financial Statements


                                               www.americancentury.com        9


Statement of Assets and Liabilities
- --------------------------------------------------------------------------------

JUNE 30, 1998 (UNAUDITED)

ASSETS
Investment securities, at value
  (identified cost of $126,928,536)
  (Note 3) ..............................................         $ 125,922,420
Foreign currency holdings, at value
  (identified cost of $379,749) .........................               379,529
Cash ....................................................             9,114,574
Receivable for investments sold .........................             8,420,509
Receivable for forward foreign
  currency exchange contracts ...........................             1,991,168
Receivable for capital shares sold ......................               454,333
Interest receivable .....................................             1,495,465
                                                                  -------------
                                                                    147,777,998
                                                                  -------------
LIABILITIES
Disbursements in excess of
  demand deposit cash ...................................               158,427
Payable for investments purchased .......................             2,632,031
Payable for forward foreign
  currency exchange contracts ...........................             2,232,968
Payable for capital shares redeemed .....................               158,902
Accrued management fees (Note 2) ........................                98,245
                                                                  -------------
                                                                      5,280,573
                                                                  -------------
Net Assets ..............................................         $ 142,497,425
                                                                  =============

CAPITAL SHARES
Outstanding (unlimited number
  of shares authorized) .................................            12,765,728
                                                                  =============
Net Asset Value Per Share ...............................         $       11.16
                                                                  =============

NET ASSETS CONSIST OF:
Capital paid in .........................................         $ 143,621,834
Undistributed net investment income .....................             1,181,038
Accumulated net realized loss
  from investments
  and foreign currency transactions .....................            (1,036,389)
Net unrealized depreciation on
   investments and translation
  of assets and liabilities in
  foreign currencies (Note 3) ...........................            (1,269,058)
                                                                  -------------
                                                                  $ 142,497,425
                                                                  =============

- --------------------------------------------------------------------------------
UNDERSTANDING  THE STATEMENT OF ASSETS AND  LIABILITIES--This  statement details
what the fund owns (assets),  what it owes (liabilities),  and its net assets as
of the last day of the period.  If you subtract  what the fund owes from what it
owns, you get the fund's net assets.  The net assets divided by the total number
of fund shares  outstanding  gives you the price of an individual  share, or the
net asset value per share.

NET ASSETS are also broken out by capital (money invested by shareholders);  net
investment  income not yet paid to  shareholders or net investment  losses;  net
gains earned on investments  but not yet paid to  shareholders  or net losses on
investments (known as realized gains or losses); and finally, gains or losses on
securities  still  owned  by the  fund  (known  as  unrealized  appreciation  or
depreciation).  This  breakout  tells  you the  value  of net  assets  that  are
performance-related,  such as investment  gains or losses,  and the value of net
assets that are not related to performance,  such as shareholder investments and
redemptions.

                                              See Notes to Financial Statements


10       1-800-345-2021


Statement of Operations
- --------------------------------------------------------------------------------

FOR THE SIX MONTHS ENDED JUNE 30, 1998 (UNAUDITED)

INVESTMENT INCOME

Income:
Interest (net of foreign taxes
  withheld of $6,644) .....................................         $ 3,327,117
                                                                    -----------

Expenses (Note 2):
Management fees ...........................................             630,134
Trustees' fees and expenses ...............................              34,480
                                                                    -----------
                                                                        664,614
                                                                    -----------
Net investment income .....................................           2,662,503
                                                                    -----------

REALIZED AND UNREALIZED GAIN
(LOSS) ON INVESTMENTS AND
FOREIGN CURRENCY (NOTE 3)

Net realized gain (loss) on:
Investments ...............................................           6,206,784
Foreign currency transactions .............................          (7,253,623)
                                                                    -----------
                                                                     (1,046,839)
                                                                    -----------
Change in net unrealized
  depreciation on:
Investments ...............................................          (2,139,575)
Translation of assets and
  liabilities in foreign currencies .......................           5,079,667
                                                                    -----------
                                                                      2,940,092
                                                                    -----------
Net realized and unrealized
  gain on investments and
  foreign currency ........................................           1,893,253
                                                                    -----------
Net Increase in Net Assets
  Resulting from Operations ...............................         $ 4,555,756
                                                                    ===========

- --------------------------------------------------------------------------------
UNDERSTANDING  THE STATEMENT OF  OPERATIONS--This  statement  breaks out how the
fund's  net  assets  changed  during  the  period  as a  result  of  the  fund's
operations.  It tells you how much money the fund made or lost after taking into
account income,  fees and expenses,  and investment gains or losses. It does not
include shareholder transactions and distributions.

Fund OPERATIONS include:

* interest income earned from investments

* management fees and other expenses

* gains or losses from selling investments (known as realized gains or losses)

* gains or losses on current fund holdings (known as unrealized appreciation or
  depreciation)

See Notes to Financial Statements


                                               www.americancentury.com        11


Statements of Changes in Net Assets
- --------------------------------------------------------------------------------

SIX MONTHS ENDED JUNE 30, 1998 (UNAUDITED) AND YEAR ENDED DECEMBER 31, 1997

Decrease in Net Assets                                1998              1997

OPERATIONS
Net investment income ......................    $   2,662,503     $   9,944,104
Net realized loss on investments
  and foreign currency transactions ........       (1,046,839)      (13,266,841)
Change in net unrealized
  depreciation on investments
  and translation
  of assets and liabilities in
  foreign currencies .......................        2,940,092       (12,346,528)
                                                -------------     -------------
Net increase (decrease) in net
  assets resulting from operations .........        4,555,756       (15,669,265)
                                                -------------     -------------

DISTRIBUTIONS TO SHAREHOLDERS
From net investment income .................             --            (559,851)
From net realized gains on
  investment transactions ..................       (1,237,801)       (2,182,275)
                                                -------------     -------------
Decrease in net assets from
  distributions ............................       (1,237,801)       (2,742,126)
                                                -------------     -------------

CAPITAL SHARE TRANSACTIONS
Proceeds from shares sold ..................       21,774,116        93,135,669
Proceeds from reinvestment
  of distributions .........................        1,156,498         2,542,647
Payments for shares redeemed ...............      (49,482,300)     (163,991,495)
                                                -------------     -------------
Net decrease in net assets
  from capital share transactions ..........      (26,551,686)      (68,313,179)
                                                -------------     -------------
Net decrease in net assets .................      (23,233,731)      (86,724,570)

NET ASSETS
Beginning of period ........................      165,731,156       252,455,726
                                                -------------     -------------
End of period ..............................    $ 142,497,425     $ 165,731,156
                                                =============     =============
Undistributed (distributions in
  excess of) net investment income .........    $   1,181,038     $  (1,481,465)
                                                =============     =============

TRANSACTIONS IN SHARES
OF THE FUND
Sold .......................................        1,966,117         8,534,948
Issued in reinvestment of dividends ........          103,889           230,124
Redeemed ...................................       (4,480,534)      (15,004,608)
                                                -------------     -------------
Net decrease ...............................       (2,410,528)       (6,239,536)
                                                =============     =============

- --------------------------------------------------------------------------------
UNDERSTANDING THE STATEMENTS OF CHANGES IN NET ASSETS--These statements show how
the fund's net assets  changed over the past two reporting  periods.  It details
how much a fund grew or shrank as a result of:

*   operations--a  summary of the Statement of Operations from the previous page
    for the most recent period

*   distributions--income and gains distributed to shareholders

*   share transactions--shareholders' purchases, reinvestments, and redemptions

Net  assets  at the  beginning  of  the  period  plus  the  sum  of  operations,
distributions  to  shareholders  and capital  share  transactions  result in net
assets at the end of the period.

                                              See Notes to Financial Statements


12       1-800-345-2021


Notes to Financial Statements
- --------------------------------------------------------------------------------

JUNE 30, 1998 (UNAUDITED)

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 (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.  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 as of the
trade date. 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,  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 purpose 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 securities  purchased 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 securities transferred to ensure that 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 or state income taxes.

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


                                               www.americancentury.com        13


Notes to Financial Statements
- --------------------------------------------------------------------------------
                                                                    (Continued)
JUNE 30, 1998 (UNAUDITED)

     The  character of  distributions  made during the year from net  investment
income  or  net  realized   capital   gains  may  differ  from  their   ultimate
characterization for federal income tax purposes.  These differences reflect the
differing character of certain income items and net capital gains and losses for
financial  statement and tax purposes 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.  These estimates and assumptions  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--Funds  Distributor,  Inc.  (FDI)  is  the  Trust's
distributor. Certain officers of FDI are also officers of the Trust.

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

      The Trust has entered into a Management  Agreement with ACIM that provides
the Fund with  investment  advisory  and  management  services in exchange for a
single,  unified management fee. The Agreements provide that all expenses of the
Fund, except brokerage commissions,  taxes, portfolio insurance,  interest, fees
and expenses of those directors who are not considered  "interested  persons" as
defined in the  Investment  Company  Act of 1940  (including  counsel  fees) and
extraordinary  expenses, will be paid by ACIM. 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  each  Fund  determines  its  Investment
Category.  The three investment  categories are: the Money Market Fund Category,
the Bond Fund Category and the Equity Fund  Category.  The Funds are included in
the Equity 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 by each Fund
based on each Fund's  average daily closing net assets during the previous month
multiplied  by the  monthly  management  fee  rate.  The  annualized  Investment
Category Fee schedule for the Funds 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 (for all Funds) 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

     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  trustees  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, and the
Trust's transfer agent, American Century Services Corporation.

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

     Purchases  and  sales  of  securities,  excluding  short-term  investments,
totaled  $254,631,495  and  $274,863,853,   respectively.   On  June  30,  1998,
accumulated net unrealized depreciation on investments was $1,077,542,  based on
the  aggregate  cost  of   investments   for  federal  income  tax  purposes  of
$126,999,962,  which  consisted of unrealized  appreciation  of  $1,049,528  and
unrealized depreciation of $2,127,070.


14       1-800-345-2021


<TABLE>
<CAPTION>
International Bond--Financial Highlights
- --------------------------------------------------------------------------------

FOR A SHARE OUTSTANDING THROUGHOUT THE YEARS ENDED DECEMBER 31 (EXCEPT AS NOTED)

                                             1998(1)             1997          1996          1995            1994          1993
PER-SHARE DATA

Net Asset Value,
<S>                                      <C>               <C>            <C>            <C>            <C>            <C>        
Beginning of Period ...................  $     10.92       $     11.79    $     11.95    $     10.36    $     10.82    $     10.01
                                         -----------       -----------    -----------    -----------    -----------    -----------
Income From Investment
  Operations
  Net Investment Income ...............         0.19              0.65           0.69           0.61           0.78           0.69
  Net Realized and Unrealized
  Gain (Loss) on Investment
  Transactions ........................         0.14             (1.34)          0.03           1.88          (0.63)          0.49
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total From Investment
  Operations ..........................         0.33             (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 ..........        (0.09)            (0.14)         (0.15)          --            (0.01)          --
                                         -----------       -----------    -----------    -----------    -----------    -----------
  Total Distributions .................        (0.09)            (0.18)         (0.88)         (0.90)         (0.61)         (0.37)
                                         -----------       -----------    -----------    -----------    -----------    -----------
Net Asset Value,
End of Period .........................  $     11.16       $     10.92    $     11.79    $     11.95    $     10.36    $     10.82
                                         ===========       ===========    ===========    ===========    ===========    ===========
  Total Return(2) .....................         3.02%            (5.88)%         6.38%         24.40%          1.52%         11.79%

RATIOS/SUPPLEMENTAL DATA
Ratio of Operating Expenses
  to Average Net Assets ...............         0.88%(3)          0.84%          0.83%          0.82%          0.86%          0.85%
Ratio of Net Investment Income
  to Average Net Assets ...............         3.52%(3)          4.82%          5.48%          6.14%          6.09%          6.27%
Portfolio Turnover Rate ...............          189%              163%           242%           167%           166%           310%
Net Assets, End of Period
  (in thousands) ......................  $   142,497       $   165,731    $   252,456    $   252,247    $   194,301    $   355,615
</TABLE>

(1) Six months ended June 30, 1998 (unaudited).

(2) Total  return   assumes   reinvestment   of  dividends   and  capital  gains
    distributions,  if any.  Total return for periods less than one year are not
    annualized.

(3) Annualized.

- --------------------------------------------------------------------------------
UNDERSTANDING THE FINANCIAL  HIGHLIGHTS--This  statement itemizes current period
activity and  statistics and provides  comparison  data for the last five fiscal
years.

On a per-share basis, it includes:

* share price at the beginning of the period

* investment income and capital gains or losses

* income and capital gains distributions paid to shareholders

* share price at the end of the period


It also includes some key statistics for the period:

* total return--the overall percentage return of the fund, assuming reinvestment
  of all distributions

* expense ratio--operating expenses as a percentage of average net assets

* net income ratio--net investment income as a percentage of average net assets

* portfolio turnover--the percentage of the portfolio that was replaced during
  the period

See Notes to Financial Statements


                                               www.americancentury.com        15


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.


16       1-800-345-2021


Background Information
- --------------------------------------------------------------------------------

INVESTMENT PHILOSOPHY AND POLICIES

     The Benham Group offers 39  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  seeks  current  income  and  capital  appreciation  by
investing 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 following index is used in the report for fund performance comparisons.
It is not an investment product available for purchase.

     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 $280 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.


[right margin]

INVESTMENT TEAM LEADERS
  PORTFOLIO MANAGERS:
    DOMINIC PEGLER (J.P. MORGAN)
    DAVE SCHROEDER


                                               www.americancentury.com        17


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 15.

PORTFOLIO STATISTICS

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

*  WEIGHTED  AVERAGE   MATURITY   (WAM)--a  measure  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%).

* 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.


18       1-800-345-2021


Notes
- --------------------------------------------------------------------------------


                                               www.americancentury.com        19


Notes
- --------------------------------------------------------------------------------


20       1-800-345-2021


[inside back cover]

[right margin]

[american century logo(reg.sm)]
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.


[recycled logo]
Recycled


[back cover]

[40 Years]
Four Decades of Serving Investors
40 Years
American Century
1958-1998

American Century Investments                                     BULK RATE
P.O. Box 419200                                              U.S. POSTAGE PAID
Kansas City, MO 64141-6200                                   AMERICAN CENTURY
www.americancentury.com                                          COMPANIES



9808                              (c)1998 American Century Services Corporation
SH-BKT-13278                                            Funds Distributor, Inc.


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