OpenAI releases GPT-5.5, advancing toward AI superapp with enhanced coding and research tools
OpenAI unveiled GPT-5.5 on Thursday, calling it its smartest and most intuitive AI model yet. Released just seven weeks after GPT-5.4, the model brings significant improvements in agentic coding, knowledge work, and scientific research. President Greg Brockman says it's a step toward OpenAI's planned superapp that will unify ChatGPT, Codex, and AI browser capabilities.