Summary Prospectus by Investment Company - Form 497K

BRIGHTHOUSE FUNDS TRUST I

SUMMARY PROSPECTUS

April 29, 2024

American Funds® Growth Allocation Portfolio

Class B and Class C Shares

Investment Objective

Growth of capital.

Fees and Expenses of the Portfolio

The following table describes the fees and expenses that you may pay if you buy and hold shares of the Portfolio. The table and the Example below do not reflect the fees, expenses or withdrawal charges imposed by your variable life insurance policy or variable annuity contract (the "Contract"). If Contract expenses were reflected, the fees and expenses in the table and Example would be higher. See the Contract prospectus for a description of those fees, expenses and charges.

Shareholder Fees (fees paid directly from your investment)-

None

Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)
	Class B	Class C
Management Fee	0.06%	0.06%
Distribution and/or Service (12b-1) Fees	0.25%	0.55%
Other Expenses	0.01%	0.01%
Acquired Fund Fees and Expenses (Underlying Portfolio Fees and Expenses)	0.37%	0.37%
Total Annual Portfolio Operating Expenses	0.69%	0.99%

Example

The following Example is intended to help you compare the cost of investing in the Portfolio with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Portfolio for the time periods indicated and then redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Portfolio's operating expenses remain the same. Although

your actual costs may be higher or lower, based on these assumptions, your costs would be:

	1 Year	3 Years	5 Years	10 Years
Class B	$70	$221	$384	$859
Class C	$101	$315	$547	$1,213

Portfolio Turnover

The Portfolio, which operates as a fund of funds, does not pay transaction costs when it buys and sells shares of the investment companies in which the Portfolio invests (the "Underlying Portfolios") (or "turns over" its portfolio). An Underlying Portfolio pays transaction costs, such as commissions, when it turns over its portfolio, and a higher portfolio turnover rate may indicate higher transaction costs. These costs, which are not reflected in annual portfolio operating expenses or in the Example, affect the performance of both the Underlying Portfolios and the Portfolio.
During the most recent fiscal year, the Portfolio's portfolio turnover rate was 5% of the average value of its portfolio. Some of the Underlying Portfolios, however, may have portfolio turnover rates as high as 100% or more.

Principal Investment Strategies

The Portfolio will invest substantially all of its assets in shares of the Underlying Portfolios, which are funds of the American Funds Insurance Series® and other funds within the American Fund family that are not part of the American Funds Insurance Series. The Portfolio has a target allocation between the broad asset classes of equity and fixed income. Brighthouse Investment Advisers, LLC ("BIA"), the adviser to the Portfolio, establishes specific target investment percentages for the broad asset classes and the various components of each asset category. BIA determines these target allocations based on a variety of models and factors, including its long-term outlook for the return and risk characteristics of the various asset classes and the relationship between those asset classes. BIA then selects the Underlying

Portfolios in which the Portfolio invests based on, among other factors, the Underlying Portfolios' investment objectives, policies, investment process and portfolio analytical and management personnel.

Under normal circumstances, the Portfolio primarily invests in Underlying Portfolios that may hold large cap, small cap, mid cap or foreign equity securities and also invests in Underlying Portfolios that hold fixed income securities in accordance with target allocations of 85% to equity securities and 15% to fixed income securities.

The following chart describes the target allocations, as of April 29, 2024, between equity and fixed income securities. You should note that these percentages do not directly correspond to investment in the Underlying Portfolios because each Underlying Portfolio may contain one or more asset classes (e.g., equity and fixed income) and each Underlying Portfolio may contain various subsets of an asset class (e.g., small cap, mid cap and foreign securities).

Although the Portfolio's investments in the Underlying Portfolios will be made in an attempt to achieve the target allocations, the actual allocations to equity and fixed income securities may vary from the Portfolio's target allocations in the chart below. Deviations from the asset class target allocations will affect the asset class subset target allocations. In addition, the Portfolio's actual allocations could vary substantially from the target allocations due to market valuation changes.

Asset Class	Target Allocation *
Equity	85%
Domestic Equity		56%
Foreign Equity		29%
Fixed Income	15%
U.S. Investment Grade		11%
U.S. High Yield		2.25%
Foreign Fixed Income		1.75%

The "Foreign Equity" allocation shown above may be invested in foreign equity securities of any capitalization or country but primarily will be invested in larger capitalization companies of developed countries, and the "Foreign Fixed Income" allocation shown above may be invested in foreign fixed securities of any credit quality but primarily will be invested in investment grade debt.

The Portfolio seeks to achieve capital growth through its investments in Underlying Portfolios that invest in equity securities. These investments may include Underlying Portfolios that invest mainly in stocks of large established U.S. companies as well as, to a lesser extent, in stocks of foreign companies and smaller U.S. companies with above-average growth potential. The Portfolio seeks to achieve capital growth secondarily through its investments in Underlying Portfolios that invest in fixed income securities. These investments may include Underlying

Portfolios that invest exclusively in bonds of U.S. issuers. The Portfolio may invest in Underlying Portfolios that invest substantially all of their assets in U.S. Government securities, as well as Underlying Portfolios that invest in investment grade and high-yield, high-risk bonds (commonly known as "junk bonds").

Periodically, BIA will evaluate the Portfolio's allocation between equity and fixed income, inclusive of the exposure to various investment styles and asset sectors, relative to the Portfolio's risk profile. It is anticipated that any changes to the targets for the broad asset classes will be, in any given year, within a range of plus or minus 10% from the current allocations. Concurrently, BIA will consider whether to make changes to the Portfolio's investments in any of the Underlying Portfolios.

For additional information about the Portfolio's investment strategies, the names of the Underlying Portfolios in which the Portfolio may invest and where to find more detailed information about the Portfolio's investments in the Underlying Portfolios, please see "Additional Information about the Portfolio's Investment Strategies" in the Prospectus.

Principal Risks

As with all mutual funds, there is no guarantee that the Portfolio will achieve its investment objective. You could lose money by investing in the Portfolio. An investment in the Portfolio through a Contract is not a deposit or obligation of, or guaranteed by, any bank, and is not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. Government.

There are direct and indirect risks of investing in the Portfolio. The value of your investment in the Portfolio may be affected by one or more of the following risks, which are described in more detail in "Principal Risks of Investing in the Portfolio" in the Prospectus. The significance of any specific risk to an investment in the Portfolio will vary over time, depending on the composition of the Portfolio, market conditions, and other factors. You should read all of the risk information presented below carefully, because any one or more of these risks could cause the Portfolio's return, the price of the Portfolio's shares or the Portfolio's yield to fluctuate.

Direct risks of investing in the Portfolio include:

Underlying Portfolio Risk.The investment performance of a Portfolio that invests all or substantially all of its assets in Underlying Portfolios may be adversely affected if the Underlying Portfolios are unable to meet their investment objectives or the Portfolio allocates a significant portion of its assets to an Underlying Portfolio that performs poorly, including relative to other Underlying Portfolios. Any Underlying Portfolio may have multiple asset class exposures and such exposures may change over time. In addition, the Portfolio bears its pro-rata portion of the operating expenses of the Underlying Portfolios in which it invests.

Asset Allocation Risk.The Portfolio's ability to achieve its investment objective depends upon BIA's analysis of various factors and the mix of asset classes that results from such analysis, which may prove incorrect. The particular asset allocation selected for the Portfolio may not perform as well as other asset allocations that could have been selected for the Portfolio. The Portfolio may experience losses or poor relative performance if BIA allocates a significant portion of the Portfolio's assets to an asset class that does not perform as BIA anticipated, including relative to other asset classes. The Portfolio may underperform funds that allocate their assets differently than the Portfolio.

Model and Data Risk.When the quantitative models ("Models") and information and data ("Data") used in managing the Portfolio prove to be incorrect or incomplete, any investment decisions made in reliance on the Models and Data may not produce the desired results and the Portfolio may realize losses. Models may cause the Portfolio to underperform other investment strategies and may not perform as intended in volatile markets. In addition, any hedging based on faulty Models and Data may prove to be unsuccessful. Furthermore, the success of Models that are predictive in nature is dependent largely on the accuracy and reliability of the supplied historical data. All Models are susceptible to input errors which may cause the resulting information to be incorrect.

Indirect risks of investing in the Portfolio (direct risks of investing in the Underlying Portfolios) include:

Market Risk.An Underlying Portfolio's share price can fall because of, among other things, a decline in the market as a whole, deterioration in the prospects for a particular industry or company, changes in general economic conditions, such as prevailing interest rates or investor sentiment, or other factors including terrorism, war, natural disasters and the spread of infectious illness including epidemics or pandemics such as the COVID-19 pandemic. Significant disruptions to the financial markets could adversely affect the liquidity and volatility of securities held by an Underlying Portfolio.

Interest Rate Risk.The value of an Underlying Portfolio's investments in fixed income securities may decline when prevailing interest rates rise or increase when interest rates fall. The longer a security's maturity or duration, the greater its value will change in response to changes in interest rates. The interest earned on an Underlying Portfolio's investments in fixed income securities may decline when prevailing interest rates fall. During periods of very low or negative interest rates, an Underlying Portfolio may be unable to maintain positive returns or pay dividends to Underlying Portfolio shareholders. Additionally, under certain market conditions in which interest rates are low or negative, an Underlying Portfolio may have a very low, or even negative yield. A low or negative yield would cause an Underlying Portfolio to lose money and the net asset value of the Underlying Portfolio's shares to decline in certain conditions and over certain time periods. Changes in prevailing interest rates, particularly sudden changes, may also increase the level of

volatility in fixed income and other markets, increase redemptions in an Underlying Portfolio's shares and reduce the liquidity of an Underlying Portfolio's debt securities and other income-producing holdings. Changes in interest rate levels are caused by a variety of factors, such as central bank monetary policies, inflation rates, and general economic and market conditions.

Credit and Counterparty Risk.The value of an Underlying Portfolio's investments may be adversely affected if a security's credit rating is downgraded or an issuer of an investment held by an Underlying Portfolio fails to pay an obligation on a timely basis, otherwise defaults or is perceived by other investors to be less creditworthy. If a counterparty to a derivatives or other transaction with an Underlying Portfolio files for bankruptcy, becomes insolvent, or otherwise becomes unable or unwilling to honor its obligation to an Underlying Portfolio, the Underlying Portfolio may experience significant losses or delays in realizing income on or recovering collateral and may lose all or a part of the income from the transaction.

High Yield Debt Security Risk.High yield debt securities, or "junk" bonds, may be more susceptible to market risk and credit and counterparty risk than investment grade debt securities because issuers of high yield debt securities are less secure financially and their securities are more sensitive to downturns in the economy. In addition, the secondary market for high yield debt securities may not be as liquid as that for higher rated debt securities. High-yield debt securities range from those for which the prospect for repayment of principal and interest is predominantly speculative to those which are currently in default on principal or interest payments or whose issuers are in bankruptcy.

Foreign Investment Risk.Investments in foreign securities, whether direct or indirect, tend to be more volatile and less liquid than investments in U.S. securities because, among other things, they involve risks relating to political, social, economic and other developments abroad, as well as risks resulting from differences between the regulations and reporting standards and practices to which U.S. and foreign issuers are subject. To the extent foreign securities are denominated in foreign currencies, their values may be adversely affected by changes in currency exchange rates. All of the risks of investing in foreign securities are typically increased by investing in emerging market countries. To the extent an Underlying Portfolio invests in foreign sovereign debt securities, it is subject to additional risks.

Market Capitalization Risk.Investing primarily in issuers in one market capitalization category (large, medium or small) carries the risk that due to current market conditions that category will be out of favor with investors. Larger, more established companies may be unable to respond quickly to new competitive challenges or attain the high growth rate of successful smaller companies. Stocks of medium and small capitalization companies may be more volatile than those of larger companies due to, among other things, narrower product

lines, more limited financial resources and fewer experienced managers. In addition, there is typically less publicly available information about small capitalization companies, and their stocks may have a more limited trading market than stocks of larger companies.

Investment Style Risk.Different investment styles such as growth or value tend to shift in and out of favor, depending on market and economic conditions as well as investor sentiment. An Underlying Portfolio may outperform or underperform other funds that employ a different investment style.

Mortgage-Backed and Asset-Backed Securities Risk.The value of investments in mortgage-backed and asset-backed securities is subject to interest rate risk and credit and counterparty risk. These securities are also subject to the risk that issuers will prepay the principal more quickly or more slowly than expected, which could cause an Underlying Portfolio to invest the proceeds in less attractive investments or increase the volatility of their prices. To the extent mortgage-backed and asset-backed securities held by an Underlying Portfolio are backed by lower rated securities, such as sub-prime obligations, or are subordinated to other interests in the same mortgage or asset pool, the likelihood of an Underlying Portfolio receiving payments of principal or interest may be substantially limited.

Portfolio Turnover Risk. The investment techniques and strategies utilized by the Underlying Portfolios might result in a high degree of portfolio turnover. High portfolio turnover rates will increase the Underlying Portfolios' transaction costs, which can adversely affect the returns on the Portfolio's investments in those Underlying Portfolios.

Derivatives Risk.An Underlying Portfolio may invest in derivatives to obtain investment exposure, enhance return or "hedge" or protect its assets from an unfavorable shift in the value or rate of a reference instrument or asset. Derivatives can be highly volatile and can significantly increase an Underlying Portfolio's exposure to market risk, credit and counterparty risk and other risks. Derivatives may be illiquid and difficult to value and can involve risks in addition to, and potentially greater than, the risks of the underlying reference instrument. Because of their complex nature, some derivatives may not perform as intended. As a result, an Underlying Portfolio may not realize the anticipated benefits from a derivative it holds or it may realize losses. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment. Derivative transactions may create investment leverage, which increases an Underlying Portfolio's volatility and may require the Underlying Portfolio to liquidate portfolio securities when it is not advantageous to do so. Government regulation of derivative instruments may limit or prevent an Underlying Portfolio from using such instruments as part of its investment strategies, which could adversely affect the Underlying Portfolio.

Past Performance

The information below provides some indication of the risks of investing in the Portfolio by showing changes in the Portfolio's performance from year to year and how the Portfolio's average annual returns over time compare with those of a broad-based securities market index. Note that the results in the bar chart and table do not include the effect of Contract charges. If these Contract charges had been included, performance would have been lower. As with all mutual funds, past returns are not a prediction of future returns.

Year-by-Year Total Return for Class B Shares as of
December 31 of Each Year

Highest Quarter	Q2 2020	18.74%
Lowest Quarter	Q1 2020	-18.77%

Average Annual Total Return as of December 31, 2023

	1 Year	5 Years	10 Years
Class B	20.66%	10.75%	8.32%
Class C	20.27%	10.43%	8.01%
Dow Jones Moderately Aggressive Portfolio Index (reflects no deduction for mutual fund fees or expenses)	15.59%	9.31%	6.94%

Management

Adviser. Brighthouse Investment Advisers, LLC, is the Portfolio's investment adviser.

Portfolio Managers.The Portfolio is managed by a committee led by Kristi Slavin. Other members of the committee are James Mason and Anna Koska. Ms. Slavin has been a member since 2012. Mr. Mason has been a member since 2021. Ms. Koska has been a member since 2022.

Purchase and Sale of Portfolio Shares

Shares of the Portfolio are only sold to separate accounts of insurance companies, including insurance companies affiliated with BIA, to fund Contracts. For information regarding the purchase and sale of the Portfolio's shares, please see the prospectus for the relevant Contract.

Tax Information

For information regarding the tax consequences of Contract ownership, please see the prospectus for the relevant Contract.

Payments to Broker-Dealers and Other Financial
Intermediaries

The Portfolio is not sold directly to the general public but instead is offered as an underlying investment option for Contracts issued by insurance companies, including insurance companies that are affiliated with the Portfolio and BIA. The Portfolio and its related companies, including BIA, may make payments to the sponsoring insurance companies (or their affiliates) for distribution and/or other services, and the