25-Year-Old's AI Chip Startup Olix Triples to $3.3 Billion

A London chip startup founded by a 25-year-old just closed Europe's largest semiconductor venture capital round, and the speed of its valuation growth is genuinely rare even by AI industry standards. Olix raised $312 million in a Series B round led by New York investment firm Fundomo, valuing the company at $3.3 billion, more than triple the roughly $1 billion valuation it reached just six months earlier, according to PitchBook's reporting on the round.

Founder James Dacombe started Olix in London in 2024 at age 23, after previously building neurotech company CoMind. Arm, quantitative trading firm Hudson River Trading, and Netflix co-founder Reed Hastings all participated as investors, alongside the UK government's own Sovereign AI venture fund, which counts Olix among its earliest bets, according to The Next Web's coverage of the raise.

Dacombe's core thesis is that the era of a single chip type handling every AI computing task is ending. "We are moving into a world of specialists," he told the Financial Times, comparing an AI data center to a factory whose product is a single output, the token, where producing each one requires hundreds of distinct operations, each with different hardware demands, yet virtually the entire industry still runs every stage on the same general-purpose chip.

Olix's answer is its X-1 platform, which spreads a model's workload across several specialized chips connected by a photonic network that moves data using light rather than copper. Its first chip, DX-1, targets the specific stage where a model generates its output, which Olix claims can run faster and on less power than general-purpose alternatives for very large models, according to Data Center Dynamics' reporting on the technical approach.

Olix paired the funding announcement with two significant appointments. Matt Briers, who spent nine years as CFO of UK fintech Wise and took the company through its 2021 direct listing on the London Stock Exchange, joined as Olix's own CFO. Nick McKeown, a Stanford professor emeritus who helped create software-defined networking and won the 2025 Marconi Prize, joined the board of directors, according to Tech.eu's reporting on the appointments. Bringing on a CFO with direct public-listing experience signals genuine institutional ambition beyond simply raising another private round, a trajectory worth watching alongside DeepX's own $2.2 billion valuation surge and eventual 2027 IPO plans in the same specialized AI chip category.

Olix's rapid valuation growth adds to a genuinely notable pattern this week of specialized AI chip startups attracting serious capital by explicitly positioning themselves against, rather than alongside, Nvidia's general-purpose dominance. For businesses evaluating AI infrastructure vendors, this signals growing investor confidence that specialized inference hardware, tuned for specific stages of the AI computing pipeline, represents a genuine, fundable alternative to defaulting entirely to general-purpose GPUs.

The performance of Olix's first chip once customers begin using it in 2027 remains the real test of whether this valuation reflects durable technical advantage or speculative enthusiasm for a compelling pitch.

London-based AI chip startup Olix raised $312 million at a $3.3 billion valuation, more than tripling its worth in six months, backed by Arm, Hudson River Trading, Netflix co-founder Reed Hastings, and the UK government's Sovereign AI fund. The company builds specialized optical AI chips designed to outperform general-purpose processors at specific stages of AI inference. Olix appointed former Wise CFO Matt Briers and Stanford professor Nick McKeown to senior roles as it prepares to deliver its first chip to customers in 2027.