<PAGE>
AMERICAN GENERAL LIFE INSURANCE COMPANY
SEPARATE ACCOUNT VL-R
PLATINUM INVESTOR III
FLEXIBLE PREMIUM
VARIABLE LIFE INSURANCE POLICIES
SUPPLEMENT DATED DECEMBER 1, 2000 TO
PROSPECTUS DATED NOVEMBER 1, 2000
Effective November 29, 2000 American General Life Insurance Company ("AGL")
is amending the prospectus for the sole purpose of reflecting that the Ayco
Large Cap Growth Fund I is available as an investment option under the Policies.
1. On Page 3 of the prospectus, the paragraph titled "Investment Option
currently not available" is deleted in its entirety.
2. On Page 11 of the prospectus, in the chart titled "The Mutual Funds'
Annual Expenses", the information in the chart related only to the Ayco Series
Trust is deleted in its entirety and replaced with the following information:
<TABLE>
<CAPTION>
FUND OTHER FUND TOTAL FUND
MANAGEMENT OPERATING OPERATING
FEES (AFTER EXPENSES (AFTER EXPENSES (AFTER
EXPENSE 12b-1 EXPENSE EXPENSE
NAME OF FUND REIMBURSEMENT)/3/ FEES REIMBURSEMENT)/3/ REIMBURSEMENT)/3/
--------------- ----------------- ----- ----------------- -----------------
<S> <C> <C> <C> <C>
AYCO SERIES TRUST:/2/
Ayco Large Cap Growth Fund I 0.80% 0.20% 1.00%
</TABLE>
3. On Page 13 of the prospectus, Footnote 2 is deleted in its entirety and
replaced with the following footnote:
/2/Fees and charges for Ayco Series Trust are for fiscal year 2000 and
are the fees and charges that the Trust anticipates it will charge.
4. On page 34 of the prospectus, the 2nd paragraph under "SEPARATE
ACCOUNT VL-R" is deleted in its entirety and replaced with the following
paragraph:
For record keeping and financial reporting purposes, Separate Account VL-R
is divided into 65 separate "divisions," 41 of which correspond to the 41
variable investment options (other than our declared fixed interest account
option). The remaining 24 divisions, and some of these 41 divisions, represent
investment options available under other variable life policies we offer. We
hold the Mutual Fund shares in which we invest your accumulation value for an
investment option in the division that corresponds to that investment option.
