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BlackRock High Yield

BRIGHTHOUSE FUNDS TRUST I

SUMMARY PROSPECTUS

April 28, 2025

BlackRock High Yield Portfolio

Class A and Class B Shares

Before you invest, you may want to review the Portfolio’s Prospectus, which contains more information about the Portfolio and its

risks. You can find the Portfolio’s Prospectus, reports to shareholders, and other information about the Portfolio (including the

documents listed below) online at https://dfinview.com/BHFT. You can also get this information at no cost by calling

1-800-882-1292 or by sending an e-mail request to RCG@brighthousefinancial.com. The Portfolio’s Prospectus and Statement of

Additional Information, both dated April 28, 2025, as supplemented from time to time, and the Portfolio’s financial statements for

the year ended December 31, 2024, including the notes to the financial statements, the financial highlights and the report of the

Portfolio’s independent registered public accounting firm, all of which are included in Form N-CSR of the Portfolio, dated

December 31, 2024, are all incorporated by reference into this Summary Prospectus. This Summary Prospectus is intended for

individuals who have purchased Contracts (as defined below) from insurance companies, including insurance companies affiliated

with Brighthouse Investment Advisers, LLC, and is not intended for use by other investors.

Investment Objective

To maximize total return, consistent with income generation and prudent investment management.

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 A	Class B
Management Fee	0.60%	0.60%
Distribution and/or Service (12b-1) Fees	None	0.25%
Other Expenses	0.06%	0.06%
Total Annual Portfolio Operating Expenses	0.66%	0.91%
Fee Waiver1	(0.03% )	(0.03% )
Net Operating Expenses	0.63%	0.88%

Brighthouse Investment Advisers, LLC has contractually agreed, for the period May 1, 2025 through April 30, 2026, to reduce the Management Fee for each class of the Portfolio. This arrangement may be modified or discontinued prior to April 30, 2026, only with the approval of the Board of Trustees of the Portfolio.

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, that the Portfolio’s operating expenses remain the same, and that all fee waivers for the Portfolio will expire after one year. 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 A	$64	$208	$365	$820
Class B	$90	$287	$501	$1,117

Portfolio Turnover

The Portfolio pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). 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 Portfolio’s performance.
During the most recent fiscal year, the Portfolio’s portfolio turnover rate was 63% of the average value of its portfolio.

Principal Investment Strategies

BlackRock Financial Management, Inc., subadviser to the Portfolio (“BFM”), and BlackRock International Limited, sub-subadviser to the Portfolio (“BIL” and together with BFM, “BlackRock” or “Subadviser”) invests the Portfolio’s assets, under normal circumstances, primarily in non-investment grade bonds with maturities of ten years or less. The Portfolio will normally invest at least 80% of its net assets in high yield bonds, including convertible and preferred securities. The high yield securities (commonly called “junk bonds”) acquired by the Portfolio will generally be in the lower rating categories of the major rating agencies (BB or lower by S&P Global Ratings or Fitch Ratings, Inc. or Ba or lower by Moody’s Investor Services) or will be

determined by BlackRock to be of similar quality. Split rated bonds and other fixed income securities (securities that receive different ratings from two or more rating agencies) are treated for these purposes as follows: if three agencies rate a security, the security will be considered to have the median credit rating; if two of the three agencies rate a security, the security will be considered to have the lower credit rating. The Portfolio may invest in securities issued pursuant to Rule 144A under the Securities Act of 1933. The Portfolio may also invest up to 20% of its assets in non-dollar denominated bonds of issuers located outside of the United States. The Portfolio’s investment in non-dollar denominated bonds may be on a currency hedged or unhedged basis. The Portfolio may also invest in common stocks.

BlackRock evaluates sectors of the high yield market and individual bonds within these sectors. Securities are purchased for the Portfolio when BlackRock determines that they have the potential for above-average total return.

To add additional diversification, BlackRock can invest in a wide range of securities, including corporate bonds, mezzanine investments (typically the most subordinated debt obligation in an issuer’s capital structure), collateralized bond obligations, collateralized loan obligations and other collateralized debt obligations, bank loans and mortgage-backed and asset-backed securities. The Portfolio can also invest, to the extent consistent with its investment goal, in non-U.S. and emerging market securities and currencies. The Portfolio may invest in securities of any rating, and may invest up to 10% of its assets (measured at the time of investment) in distressed securities that are in default or the issuers of which are in bankruptcy. These securities involve considerable risk and have significant uncertainties regarding the issuer’s current or future ability to make interest and principal payments. Typically, BlackRock will invest in distressed securities when it believes they are undervalued.

The BlackRock team may, when consistent with the Portfolio’s investment goal, buy or sell options or futures on a security or an index of securities, or enter into credit default swaps (up to 15% of its assets) and interest rate or foreign currency transactions, including swaps (collectively, commonly known as “derivatives”). The Portfolio typically uses derivatives as a substitute for taking a position in the underlying asset and/or as part of a strategy designed to reduce exposure to other risks, such as interest rate or currency risk. The Portfolio may seek to obtain market exposure to the securities in which it primarily invests by entering into a series of purchase and sale contracts or by using other investment techniques (such as reverse repurchase agreements or dollar rolls).

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.

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.

Market Risk. The 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. In addition, unexpected political, regulatory, trade and diplomatic events within the United States and abroad may affect investor and consumer confidence and may adversely impact financial markets and the broader economy, perhaps suddenly and to a significant degree. Significant disruptions to the financial markets could adversely affect the liquidity and volatility of securities held by the Portfolio.

Interest Rate Risk. The value of the 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 the Portfolio’s investments in fixed income securities may decline when prevailing interest rates fall. During periods of very low or negative interest rates, the Portfolio may be unable to maintain positive returns or pay dividends to Portfolio shareholders. Additionally, under certain market conditions in which interest rates are low or negative, the Portfolio may have a very low, or even negative yield. A low or negative yield would cause the Portfolio to lose money and the net asset value of the 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 the Portfolio’s shares and reduce the liquidity of the 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 the Portfolio’s investments may be adversely affected if a security’s credit rating is downgraded or an issuer of an investment held by the 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 the Portfolio files for bankruptcy, becomes insolvent, or otherwise becomes unable or unwilling to honor its obligation to the

BlackRock High Yield Portfolio

Portfolio, the 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 the Portfolio invests in foreign sovereign debt securities, it is subject to additional risks.

Convertible Securities Risk. Investments in convertible securities are subject to market risk, credit and counterparty risk, interest rate risk and other risks associated with investments in equity and fixed income securities, depending on the price of the underlying security and the conversion price. In addition, a convertible security may be bought back by the issuer, or the Portfolio may be forced to convert a convertible security, at a time and a price that is disadvantageous to the Portfolio.

Loan Investment Risk. Investments in loans expose the Portfolio to interest rate risk and the credit and counterparty risk of the underlying borrowers of those loans. No active trading market may exist for certain loans. Moreover, adverse market conditions may impair the liquidity of some actively traded loans. The Portfolio may have difficulty valuing and selling loans that are illiquid or are less actively traded. Loans are also subject to the risk that borrowers will prepay the principal more quickly than expected, which could cause the Portfolio to reinvest the repaid principal in investments with lower yields, thereby exposing the Portfolio to a lower rate of return. There may be a limited amount of public information about the loans in which the Portfolio invests. Purchases and sales of loans are generally subject to contractual restrictions that may impede the Portfolio’s ability to buy or sell loans and may negatively affect the transaction price. Loan transactions may take longer than seven days to settle, and the Portfolio may hold cash, sell investments,

or temporarily borrow from banks or other lenders in order to meet short-term liquidity needs. The Portfolio may not be entitled to rely on the anti-fraud protections of the federal securities laws with respect to any loans it owns in the event of fraud or misrepresentation by a borrower. The Portfolio’s purchase and sale of loans may involve the risk of market manipulation by a borrower. Any investments in below investment grade loans and other debt securities expose a portfolio to greater market risk and credit and counterparty risk than a portfolio that invests only in investment grade loans and debt securities. Lower rated securities also may be subject to greater price volatility than higher rated investments.

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 the 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 the 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 the Portfolio receiving payments of principal or interest may be substantially limited.

Leveraging Risk. Derivatives and other transactions that give rise to leverage may cause the Portfolio’s performance to be more volatile than if the Portfolio had not been leveraged. Leveraging also may require that the Portfolio liquidate portfolio securities when it is not advantageous to do so to satisfy its obligations. Leveraging may expose the Portfolio to losses in excess of the amounts invested or borrowed. Leverage can create an interest expense that would lower the Portfolio’s overall returns. There can be no guarantee that a leveraging strategy will be successful.

Collateralized Obligations Risk. Collateralized obligations are subject to varying degrees of credit and counterparty risk. The Portfolio’s credit and counterparty risk increases if its interests are subordinate to other holders’ interests.

Mortgage Dollar Roll Transactions Risk. Mortgage dollar roll transactions are subject to the risk that the value of the securities the Portfolio is obligated to purchase will decline below the agreed upon purchase price. In addition, the Portfolio will incur higher transaction costs if its mortgage dollar roll transactions lead to higher portfolio turnover. These transactions also may subject the Portfolio to a form of investment leverage, which may increase the Portfolio’s volatility and may require the Portfolio to liquidate portfolio securities when it is not advantageous to do so.

Credit Default Swap Risk. Credit default swaps may increase credit and counterparty risk (depending on whether the Portfolio is the buyer or seller of the swaps), and they may be illiquid. Credit default swaps also may be difficult to value, especially in

BlackRock High Yield Portfolio

the event of market disruptions. Credit default swap transactions in which the Portfolio is the seller may require that the Portfolio sell portfolio securities when it is not advantageous to do so in order to satisfy its obligations.

Reverse Repurchase Agreement Risk. Reverse repurchase agreements are subject to market risk, credit and counterparty risk and leveraging risk. Reverse repurchase agreements involve the risk that the market value of the securities sold will decline below the price at which the Portfolio is required to repurchase them. In addition, reverse repurchase agreements involve the risk that the other party will fail to return the securities in a timely manner or at all. The Portfolio could lose money if it is unable to recover the securities and the value of the collateral held by the Portfolio, including the value of the investments made with cash collateral, is less than the value of the securities. Reverse repurchase agreements may create investment leverage, which may increase the Portfolio’s volatility and may require the Portfolio to liquidate portfolio securities when it is not advantageous to do so.

Derivatives Risk. The 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 the 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, the 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 the Portfolio’s volatility and may require the Portfolio to liquidate portfolio securities when it is not advantageous to do so. Government regulation of derivative instruments may limit or prevent the Portfolio from using such instruments as part of its investment strategies, which could adversely affect the Portfolio.

Rule 144A and Other Exempted Securities Risk. In the U.S. market, private placements may typically be sold only to qualified institutional buyers, or qualified purchasers, as applicable. If an insufficient number of eligible buyers is interested in purchasing privately placed and other securities or instruments exempt from Securities and Exchange Commission registration (collectively “private placements”) at a particular time, this could adversely affect the marketability of such investments and the Portfolio might be unable to dispose of them promptly or at reasonable prices, subjecting the Portfolio to liquidity risk. Even the Portfolio’s holdings of liquid private placements may increase the level of Portfolio illiquidity if eligible buyers are unable or unwilling to purchase them at a particular time. The information that issuers of Rule 144A eligible securities are required to disclose to potential investors is

much less extensive than that required of public companies and is not publicly available, and issuers of Rule 144A eligible securities can require recipients of the offering information (such as the Portfolio) to agree contractually to keep the information confidential, which could also adversely affect the Portfolio’s ability to dispose of the security.

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 and an additional index reflecting the market segment(s) in which the Portfolio invests. 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 A Shares as of
December 31 of Each Year

Highest Quarter	Q2 2020	9.85%
Lowest Quarter	Q1 2020	-11.73%

Average Annual Total Return as of December 31, 2024

	1 Year	5 Years	10 Years
Class A	8.42%	4.67%	5.28%
Class B	8.19%	4.40%	5.01%
Bloomberg U.S. Universal Bond Index* (reflects no deduction for mutual fund fees or expenses)	2.04%	0.06%	1.73%
Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index (reflects no deduction for mutual fund fees or expenses)	8.19%	4.20%	5.16%

Effective February 26, 2025, the Bloomberg U.S. Universal Bond Index was added as a broad measure of market performance in accordance with recent changes to regulatory disclosure requirements. The Portfolio continues to use the Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index as an additional benchmark that reflects the market segment(s) in which the Portfolio invests.

Management

Adviser. Brighthouse Investment Advisers, LLC (“BIA”), is the Portfolio’s investment adviser.

BlackRock High Yield Portfolio

Subadviser.
BlackRock Financial Management, Inc., is the subadviser to the Portfolio and BlackRock International Limited is the sub-subadviser to the Portfolio.

Portfolio Managers. Mitchell Garfin, CFA, Managing Director of BFM, and David Delbos, Managing Director of BFM, have managed the Portfolio since 2009 and 2014, respectively.

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 insurance companies may benefit more from offering the Portfolio as an investment option in the Contracts than offering other portfolios. The benefits to the insurance companies of offering the Portfolio over other portfolios and these payments may be factors that the insurance companies consider in including the Portfolio as an underlying investment option in the Contracts and may create a conflict of interest. The prospectus for your Contract contains additional information about these payments.

BlackRock High Yield Portfolio

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