Overview
- GPT-5.4 Thinking is now live for ChatGPT Plus, Team and Pro users, with GPT-5.4 Pro available to Pro and Enterprise plans and via API, as GPT-5.2 Thinking enters a short legacy window before retirement.
- The model introduces native computer-use capabilities that can operate software via mouse and keyboard actions, with OpenAI reporting a 75% success rate on the OSWorld-Verified desktop navigation benchmark.
- API upgrades include context windows up to 1 million tokens and a new Tool Search system that lets models look up tool definitions on demand, cutting token use and improving speed in tool-heavy workflows.
- OpenAI launched a ChatGPT for Excel add-in in beta to build and update models inside workbooks, paired with finance-focused integrations from providers such as FactSet, Dow Jones Factiva, LSEG, Daloopa and S&P Global, plus reusable Skills for recurring analysis tasks.
- OpenAI reports 33% fewer false claims and 18% fewer overall errors versus GPT-5.2 and says GPT-5.4 ships with expanded cyber monitoring, trusted access controls and request blocking, alongside new evaluations of chain-of-thought monitoring.