OpenAI has released GPT-5.5, its most capable model to date, alongside a large-scale deployment at Nvidia. The system delivers improved multi-step reasoning, tool use, and efficiency over GPT-5.4, ...

OpenAI has launched GPT-5.5-powered workspace agents and partnered with Nvidia to deploy its Codex coding agent to over 10,000 employees, marking a significant step in enterprise AI adoption. GPT-5.5 ...