OpenAI releases GPT-5.5, significantly improving its "delegable" intelligence

OpenAI is rolling out GPT-5.5 to paid ChatGPT and Codex users, with higher-tier access to GPT-5.5 Thinking and GPT-5.5 Pro.

The model is designed to better infer intent and handle multi-step work like coding, debugging, research, and spreadsheet tasks with less supervision.

OpenAI says GPT-5.5 also uses fewer tokens than GPT-5.4 and posts stronger benchmark results.

The release adds tighter cyber-defense safeguards, while API access has not yet been announced.