OpenAI puts compute and data centres under Uday Ruddarraju as Sachin Katti steps back

OpenAI/Stargate

OpenAI has placed its infrastructure and compute businesses under Uday Ruddarraju, who will run the Stargate and other data-centre efforts. Sachin Katti is leaving his infrastructure role within weeks and stays on as an adviser; the article gives no exact exit date.

• Ruddarraju ran infrastructure at xAI until July 2025, when he joined OpenAI; he became OpenAI's chief technology officer for compute in July 2026.
• At xAI he worked on the Grok 3 training run across 100,000 GPUs.
• Katti joined from Intel in late 2025, led the $30B Georgia build and ran GPT-Infra from July; that work moves to Richard Ho, the company's chip chief.
• Chris Malone, OpenAI's data-centre chief, left in August.