[AI Chip Startup Positron Negotiating $750 Million Financing, Valuation Could Reach Up to $5 Billion] According to Cryptobriefing, AI chip startup Positron is in talks to raise approximately $750 million across two funding rounds. The first round is expected to value the company at $3.5 billion, while the second round could push the valuation to around $5 billion. Founded in 2023 and headquartered in Reno, Nevada, the company has already raised approximately $309 million. After completing a $230 million Series B financing in February 2026, its valuation exceeded $1 billion, with investors including Qatar Investment Authority and Arm Holdings. Positron emphasizes its energy efficiency advantages, and its Atlas inference system has already been shipped to customers, with Cloudflare being one of its buyers. The company claims its hardware delivers over 3.5 times the per-watt performance of Nvidia products for certain AI inference workloads.