Model releaseCritical global significanceConfirmed confidence
OpenAI releases GPT-5.4
OpenAI releases GPT-5.4 for ChatGPT, the API and Codex, combining reasoning, coding, tool use and professional work with documents, spreadsheets and presentations in one flagship model.
What happened
Event details
OpenAI released GPT-5.4 on March 5, 2026. The model combines reasoning, coding, tool use and professional work with documents, spreadsheets and presentations in one flagship release, and entered ChatGPT, the OpenAI API and Codex at the same time. GPT-5.4 Pro is available for more demanding tasks.
Assessment
Why it matters
A published model record with a documented capability or availability change.
93/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.
Availability
Access notes
Available in ChatGPT, the OpenAI API and Codex; GPT-5.4 Pro is offered for more demanding tasks.