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OpenAI · model release

GPT-5.1

ChatGPT gets GPT-5.1, a warmer, more conversational update to GPT-5 with more control over tone.

In detail

OpenAI released GPT-5.1 Instant and GPT-5.1 Thinking, upgrades to the GPT-5 series, rolling out to everyone beginning with paid users, along with more ways to customise ChatGPT tone.

Sources

  1. GPT-5.1: A smarter, more conversational ChatGPT · OpenAI · Primary source

Last checked 11 November 2026.

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