OpenAI Releases GPT-5.1 With Improved Instruction Following

November 13, 2025

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OpenAI released GPT-5.1 Instant and GPT-5.1 Thinking with updates to conversational style and reasoning capabilities.

The updates begin rolling out today to paid users before expanding to free accounts.

OpenAI says this release addresses feedback from users who want AI that feels more natural to interact with, while also improving intelligence.

What’s New

GPT-5.1 Instant

GPT-5.1 Instant, ChatGPT’s most-used model, now defaults to a warmer, more conversational tone.

OpenAI reports improved instruction following, with the model more reliably…

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