AI inference hardware company Positron AI has raised an US$875 million Series C financing at a US$5 billion post-money valuation. The round was co-led by NEA, Atreides Management, Valor Equity Partners, Andra Capital, Dylan Patel’s SemiAnalysis Capital and Jim Clark, the founder of Silicon Graphics and Netscape.
Positron AI builds hardware and software to reduce the cost and energy required for AI inference. The company’s shipping product, Atlas, is deployed at hyperscaler scale following the funding round, and its next-generation custom silicon, Asimov, tapes out in late 2026 with production in the second half of 2027.
Asimov powers Titan, a multi-terabyte-memory inference system for long-context and next-generation AI workloads. Positron’s architecture allows its systems to be deployed in air-cooled or liquid-cooled data centers at varying rack densities, without dependence on constrained HBM or CoWoS supply chains.
The financing will fully fund the tapeout of Asimov; the bring-up of a 2 MW+ engineering data center and emulation platform; and the production ramp of Titan.
“Speed matters in this market, both in how quickly we ship new generations of silicon and in how quickly they reach customers. Deploying Atlas at scale taught us an enormous amount about what inference customers actually need, and we have carried those lessons directly into Asimov and Titan. Our focus now is to tape out Asimov, bring Titan to production, and scale manufacturing to meet the demand in front of us. This financing gives us the resources to do exactly that,” said Mitesh Agrawal, CEO of Positron AI.
Positron is deploying more than 50 racks of Atlas, its first-generation inference system, at Oracle Cloud Infrastructure. Parasail, a key partner, utilizes that capacity to power its own inference service. Additional Atlas production customers include Jump Trading and i3d.net.
