GPT‑5.4
OpenAI's most efficient model: less tokens, more clarity
In plain words
GPT-5.4 is an AI model from OpenAI designed for productivity and development tasks. It reduces token usage while maintaining intelligence, making it more efficient for long-form work and web research. The model produces 33% fewer factual errors than previous versions and allows users to interrupt and redirect responses mid-generation without restarting, giving greater control over outputs.
written from the facts on this page · September 2026
From the sources
GPT-5.4 Thinking delivers deeper web research, stronger context retention on long tasks, and 33% fewer factual errors than its predecessor. You can now interrupt the model mid-response and redirect it. No need to start over. Same intelligence. More control. Less token burn by default.
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