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Co-founder and CEO of Cerebras Systems, a maker of wafer-scale AI chips and inference hardware.
Sam Altman called Cerebras a close partner after its stock fell nearly 20% in a week on a report that GPT-6.1 Sol's Ultrafast mode runs on Nvidia. Insider shares unlocked the same week. The drop prices fresh supply as well as doubt over OpenAI's appetite.
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Cerebras says splitting inference stages across chip types gave 5x more throughput from the same number of its systems without slowing token generation. Because the count covers only Cerebras hardware, the figure does not yet show what a mixed-chip fleet costs per unit of work.
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The Nexus rack, not the WSE-3, is now the thing Cerebras ships. That makes upgrade cadence the number buyers should price, and 10,000 tokens per second a target rather than a plan input.
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Atomico led a $100m seed into a London compute-routing startup that raised $10.25m in February. The UK's Sovereign AI Fund made its first-ever investment here, in April.
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The first multi-wafer Cerebras system pairs a doubled clock with rebuilt power delivery and interconnect. The compute claims rest on WSE-3 Turbo dies that are otherwise unchanged.
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OpenAI's invite-only Ultrafast tier runs the same GPT-5.6 Sol up to 14 times quicker, while Google halves Gemini Flash pricing until December 31. Latency is now its own budget line.
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