UK chip startup Olix triples valuation to $3.3bn

A two-year-old London startup has catapulted itself into the ranks of Britain’s most ambitious challengers to Nvidia. Olix has secured $312 million in fresh funding, tripling its valuation to $3.3 billion within just six months. The company’s founder, James Dacombe, is only 25 years old. What makes the pitch so compelling right now is the strategy at its core: a processor designed to sidestep the very components the rest of the industry is scrambling to secure.

The Series B round was led by New York-based Fundomo, as reported by Sifted. Additional participants included Arm, quantitative trading firm Hudson River Trading, and Netflix co-founder Reed Hastings. The UK government also joined through its Sovereign AI fund, marking Olix as one of the fund’s earliest investments. This latest round values the company at more than three times its roughly $1 billion valuation from February.

Dacombe’s central argument is that the era of a single, all-purpose chip is drawing to a close. The industry, he told the FT, is “moving into a world of specialists.” He frames an AI data centre as a factory where the product is the token. Producing a single token requires hundreds of distinct operations, each with different hardware requirements, yet every stage currently runs on one general-purpose processor.

Olix aims to give each stage its own dedicated machine. Its X-1 platform distributes a model across multiple specialised chips, connected by an optical network that transmits data using light instead of copper. The first chip, the DX-1, is designed for the stage where a model generates its output. For very large models, Olix claims the DX-1 can outperform a general-purpose chip in both speed and power efficiency.

The timing is fortuitous because of what the chip deliberately omits. The DX-1 reportedly uses no high-bandwidth memory and no advanced packaging, instead holding the model in fast on-chip memory. These happen to be the exact components facing the most severe shortages, a supply squeeze that is currently driving up prices across everything from laptops to smartphones.

The level of experience surrounding the founder is notable for such a young company. Olix has appointed Nick McKeown, a Stanford professor instrumental in the development of modern networking, to its board. The new chief financial officer, Matt Briers, spent nine years as CFO of Wise and led that fintech through its public listing. The company now employs over 140 people across the UK, US, and Canada.

Despite the momentum, Olix has not yet shipped a product. The design is slated for completion later this year, with the first customers expected in 2027. The silicon will be sold as part of a full server rack. Until then, its headline performance claims remain untested against real workloads, existing only in a pitch deck.

The company also remains small compared to its American counterparts. Etched is valued at $10.3 billion, and SambaNova sits at around $11 billion, both far exceeding Olix’s $3.3 billion. Public markets are cautious as well, with chip stocks jittery over the levels of debt financing the AI infrastructure build-out.

Investors are wagering that the market is large enough to sustain multiple winners. AI chips are worth roughly $84 billion this year and could approach $1 trillion early next decade, with capital continuing to flood into AI hardware. For the UK, Olix represents a rare opportunity to claim a meaningful share of that growth. Whether the silicon actually performs as promised is the one metric that will ultimately decide its fate.