OpenAI Releases GPT-5.4: Most Capable Frontier Model for Professional Work
By
mudkipdev
Sesame, salt, and substance. A flagship bake.
Summary
OpenAI has released GPT-5.4, their most capable and efficient frontier model for professional work, available in ChatGPT (as GPT-5.4 Thinking), the API, and Codex. The model combines recent advances in reasoning, coding, and agentic workflows, incorporating industry-leading coding capabilities from GPT-5.3-Codex while improving performance across tools, software environments, and professional tasks. A GPT-5.4 Pro version is also available for maximum performance on complex tasks, featuring state-of-the-art coding, computer use, tool search, and a 1M-token context window.
Key quotes
· 4 pulledToday, we're releasing GPT‑5.4 in ChatGPT (as GPT‑5.4 Thinking), the API, and Codex.
It's our most capable and efficient frontier model for professional work.
GPT‑5.4 brings together the best of our recent advances in reasoning, coding, and agentic workflows into a single frontier model.
It incorporates the industry-leading coding capabilities of GPT‑5.3‑Codex while improving how the model works across tools, software environments, and professional tasks.
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