# OpenAI — GPT-5.1: A smarter, more conversational ChatGPT

- Company: OpenAI (openai.com)
- Announced: 2025-11-12T00:00:00+00:00
- Category: model-update
- Subject: GPT / ChatGPT / API
- Models affected: GPT-5.1
- Source: https://openai.com/index/gpt-5-1
- Record: https://forck.live/items/390-gpt-5-1-a-smarter-more-conversational-chatgpt

OpenAI is upgrading the GPT-5 series with warmer, more capable models and new customization options for ChatGPT's tone and style. GPT-5.1 begins rolling out today to paid users.

## Evidence

Verbatim from https://openai.com/index/gpt-5-1:

> We’re upgrading the GPT-5 series with warmer, more capable models and new ways to customize ChatGPT’s tone and style. GPT-5.1 starts rolling out today to paid users.

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