OpenAI introduces GPT-5.4 with more knowledge-work capability

March 6, 2026

TL;DR

OpenAI has released GPT-5.4, GPT-5.4 Thinking, and GPT-5.4 Pro.
The new models are designed for agentic tasks and knowledge work, including computer-use tasks.
GPT-5.4 Thinking offers improved reasoning presentation and mid-reasoning course correction.
Context maintenance for long reasoning stretches and tasks has been enhanced.
Token efficiency has been improved, with the API context window increased to 1 million tokens.
Visual understanding is improved, allowing analysis of images up to 10.24 million pixels.
OpenAI claims responses are 18% less likely to contain factual errors.
Updates aim to help OpenAI compete in capability, cost, and token efficiency amid user competition from Anthropic and Google.
GPT-5.4 is available on ChatGPT, Codex, and the API; GPT-5.4 Thinking is for Plus, Team, and Pro subscribers; GPT-5.4 Pro is for API, Edu, and Enterprise.

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