Positron AI is in talks to raise roughly $750 million across two funding rounds, in a fundraising push that could value the AI chip startup at $3.5 billion and about $5.0 billion in successive raises. The company, founded in 2023 and based in Reno, Nevada, has raised about $309 million to date, and its Atlas inference system has already shipped to customers including Cloudflare. The new valuation targets mark a sharp step-up from Positron’s earlier financing history and underscore investor appetite for companies building hardware for AI inference, where efficiency and access to compute are key competitive factors. Positron has been positioned as a challenger in a market dominated by Nvidia. The fundraising also matters more broadly for crypto-linked compute and mining-adjacent markets because shifts in AI hardware supply and pricing can influence decentralized compute networks and operators that have expanded into AI infrastructure.