UK AI chip startup Fractile raises $220M to tackle the growing inference bottleneck

UK company Fractile has today raised a $220M Series B as it continues to build next-generation inference hardware for AI.

The round was led by Accel, Factorial Funds, and Founders Fund, with participation from Conviction, Gigascale, O1A, Felicis, Buckley Ventures and 8VC.

Founded in 2022, Fractile is building next-generation inference hardware for frontier AI. Its thesis is that the next major limit on AI progress is the time and cost required to produce useful outputs at scale.

As advanced AI systems take on harder, longer-running tasks that can require tens of millions of tokens to generate, Fractile is developing chips and systems designed to make faster inference economically viable, spanning AI research, chip microarchitecture, and foundry process innovation.

According to a post by Walter Goodwin, CEO and Founder of Fractile, the company was founded on the bet that, eventually, the world’s most capable AI systems would be limited in their impact by the amount of time they take to produce useful outputs.