Benchmark Quietly Assembles $225 Million to Back Cerebras’ Biggest Bet Yet

Benchmark Capital has raised special-purpose vehicles to invest at least $225 million in Cerebras Systems, underscoring how the artificial-intelligence infrastructure boom is reshaping even the most tradition-bound corners of Silicon Valley finance. The investment, made in conjunction with Cerebras' newly announced fundraising, comes as the chipmaker positions itself as a serious challenger to the market dominance of Nvidia in the business of powering advanced A.I. models.

The commitment was part of a broader financing in which Cerebras Systems said it raised $1 billion at a valuation of $23 billion-nearly tripling the $8.1 billion valuation it reached about six months earlier. The round was led by Tiger Global, but a person familiar with the deal said Benchmark, an early backer, contributed a sizable share of the capital. Benchmark declined to comment.

A chip built on an unusual scale

What differentiates Cerebras is less a new algorithm than a radical approach to silicon. Its flagship Wafer Scale Engine, introduced in 2024, is manufactured from almost an entire 300-millimeter wafer, rather than the small slices used in conventional chips.

• Measures roughly 8.5 inches on each side
• Contains 4 trillion transistors
• Delivers 900,000 specialized cores operating in parallel
• The company says its design can run A.I. inference more than 20 times faster than competing systems by reducing data-transfer bottlenecks

Cerebras has argued that keeping more computation on a single, massive chip can avoid the traffic jams that slow traditional multi-chip GPU clusters.

Benchmark's investment also illustrates the firm's willingness to bend its own constraints to pursue what it sees as an outlier opportunity. Known for keeping its funds under $450 million, Benchmark created two separate vehicles-both called "Benchmark Infrastructure," according to regulatory filings-specifically to finance the Cerebras purchase, the person familiar with the deal said. Benchmark first backed the 10-year-old company when it led Cerebras' $27 million Series A in 2016.

Momentum-and a clearer path to the public markets

Cerebras, based in Sunnyvale, Calif., has been gaining commercial traction. Last month it signed a multi-year agreement worth more than $10 billion to supply OpenAI with 750 megawatts of computing power through 2028, aimed at improving response times for complex A.I. queries; OpenAI's chief executive, Sam Altman, is also an investor in the chipmaker.

The company's prior attempt to go public was complicated by its ties to G42, a U.A.E.-based A.I. firm that accounted for 87% of Cerebras' revenue in the first half of 2024. G42's historical links to Chinese technology companies triggered a national-security review by the Committee on Foreign Investment in the United States, pushing Cerebras to withdraw an earlier IPO filing in early 2025. By late last year, G42 had been removed from Cerebras' investor list, and Cerebras is now preparing for a public debut in the second quarter of 2026, according to Reuters.

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