OpenAI Launches GPT-5.4 With Advanced Reasoning, Coding, and Computer-Use Capabilities

OpenAI on March 5, 2026, released GPT-5.4, its most capable and efficient frontier model to date, combining advanced reasoning, coding, and agentic workflows into a single unified system. The model is rolling out across ChatGPT (as GPT-5.4 Thinking), the API, and Codex, with a higher-performance GPT-5.4 Pro variant available for users requiring maximum compute on […]

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