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OpenAI

Is GPT-5.1 out? Yes, since November 12, 2025

Yes. GPT-5.1 was released on November 12, 2025.

A browser notification for each confirmed release in this family. No account or email.

Have you used it? GPT-5.1

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Lab
OpenAI
Family
GPT
Release date
Source
OpenAI · GPT-5.1

What changed

  • context +205 % · Context window compared with gpt-oss-safeguard-20b, same tier in this family. Went from 131k tokens to 400k tokens.
  • price $1.25 / MTok · Prompt price of GPT-5.1. gpt-oss-safeguard-20b is the previous model of the same tier, but the gap is beyond what a percentage explains.

About GPT-5.1

GPT-5.1 is the latest frontier-grade model in the GPT-5 series, offering stronger general-purpose reasoning, improved instruction adherence, and a more natural conversational style compared to GPT-5. It uses adaptive reasoning...

Next GPT model to watch

Questions

When was GPT-5.1 released?
GPT-5.1 was released on November 12, 2025.
Who makes GPT-5.1?
GPT-5.1 is made by OpenAI.
What comes after GPT-5.1?
GPT-5.1-Codex, released on November 13, 2025.