OpenAI on Thursday, March 5, 2026 released GPT-5.4, its most capable and efficient frontier model for professional work, (OpenAI) rolling it out across ChatGPT, the API, and Codex simultaneously.
The model brings together recent advances in reasoning, coding, and agentic workflows into a single system, incorporating the coding capabilities of GPT-5.3-Codex while improving performance across tools, software environments, and professional tasks involving spreadsheets, presentations, and documents.
GPT-5.4 is OpenAI's first general-purpose model with native computer-use capabilities, enabling agents to interact directly with software through screenshots, mouse commands, and keyboard inputs. On OSWorld-Verified, it achieves a 75.0% success rate, surpassing the human benchmark of 72.4%.
The API version supports context windows as large as 1 million tokens, by far the largest context window available from OpenAI, and introduces a new tool-calling system called Tool Search.
OpenAI said individual claims from the model are 33% less likely to be false and full responses are 18% less likely to contain errors compared to GPT-5.2.
The new model scored a record 83% on OpenAI's GDPval test for knowledge work tasks spanning 44 occupations.
GPT-5.4 Thinking is available to ChatGPT Plus, Team, and Pro subscribers, replacing GPT-5.2 Thinking, which will be retired on June 5, 2026. GPT-5.4 Pro is available to Pro and Enterprise plans and users can enable early access via admin settings.
The launch arrives against a backdrop of broader turbulence for OpenAI. The platform reportedly lost about 1.5 million users after OpenAI announced it would offer its services to the Department of Defense, following rival Anthropic's very public refusal to ditch its safeguards to please the Pentagon, a decision that produced both public backlash and internal opposition from some employees. Whether the GPT-5.4 release is sufficient to reverse that momentum remains to be seen.
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