UK Sovereign AI Fund Joins $6.5B Fractile Funding Round as Chipmaker Lands Anthropic Deal

The UK’s Sovereign AI Fund is set to invest in Fractile, a London-based chipmaker backed by Anthropic, as part of a $6.5 billion valuation round that marks a steep climb from its $1 billion valuation earlier this year. The funding round, expected to close as soon as next week, will raise roughly $700 million, according to *finance.yahoo.com*, with Silicon Valley firms Lightspeed and Redpoint leading the effort.

Fractile, founded in 2022 by Oxford University robotics expert Walter Goodwin, specializes in designing chips that integrate memory components directly onto processors to speed up AI workloads. Its partnership with Anthropic, which includes a $250 million supply deal for specialized chips, has positioned it as a key player in the AI infrastructure boom. The funding comes as Anthropic itself prepares for a potential $2 trillion valuation following a $13 billion fundraise last month.

The Sovereign AI Fund, launched this year with £500 million in taxpayer funding and an additional £60 million from last week’s Budget, is investing between £1 million and £10 million in Fractile, sources told *finance.yahoo.com*. The fund, chaired by Balderton Capital’s James Wise and run by venture capitalist Suzanne Ashman, has also backed other high-flying UK AI startups like Ineffable Intelligence and Olix, both of which have seen valuations surge this year.

What makes this round notable is the speed of Fractile’s growth. Just months after securing its Series B, the company’s valuation has ballooned to $6.5 billion—a trajectory that mirrors other UK AI hardware plays, including Olix (now valued at over $3.3 billion) and Ineffable Intelligence (at $5.1 billion). The Sovereign AI Fund’s involvement reflects broader efforts by the UK government to support homegrown AI champions amid concerns over over-reliance on US suppliers like Nvidia.

Yet the deal also highlights the risks of the AI infrastructure bubble. As *finance.yahoo.com* noted, the surge in spending by AI giants—Anthropic, OpenAI, and others—has driven up valuations for chipmakers, even as questions persist about the long-term sustainability of such investments. Anthropic’s own planned $2 trillion valuation, if realized, would test market appetite for AI-related bets at unprecedented scales.

For Fractile, the funding round is a validation of its approach to AI hardware innovation. By fusing memory and processing in a single chip, the company aims to reduce costs for intensive AI tasks—a critical advantage as cloud providers and AI labs scramble to optimize performance. The partnership with Anthropic, which is diversifying its supply chain beyond Nvidia, could also signal a shift in how major AI players source their infrastructure.

What to watch next: Whether Fractile can convert its valuation into revenue at scale, and how the Sovereign AI Fund’s investments perform as the broader AI market faces scrutiny. When we covered Akamai’s $11.6 billion AI infrastructure deal with Anthropic on 24 September, it signaled the growing financial stakes in AI’s supply chain. Now, Fractile’s funding round suggests that niche players are benefiting from the same momentum—though whether that momentum holds remains an open question.

Sources: finance.yahoo.com