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Source: OpenAI News
📅 13 September 2026 at 04:31 PM UTC
GPT-5.1: A smarter, more conversational ChatGPT
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⚡ Executive Takeaways & Intelligence Summary
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.
Publication Reference: https://openai.com/index/gpt-5-1
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