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ChatGPT 5.1 Is Smarter, Nicer, and Better at Actually Doing What You Asked

GPT-5.1 offers customizable tones and two adaptive response modes to improve speed for simple queries and reasoning for complex tasks, rolling out first to ChatGPT Plus users.

  • OpenAI quietly added ChatGPT‑5.1 to the ChatGPT model picker, rolling it out to ChatGPT Plus subscribers as the new default in GPT‑4, with availability arriving soon.
  • To make ChatGPT more versatile, OpenAI added custom controls for tone and personality and adaptive computation to allocate more thinking time for harder problems.
  • Click the 'Customize ChatGPT' button to set default tone and presets, with Instant mode for fast replies and Thinking mode for detailed planning, demonstrated by example prompts.
  • Try the seven suggested prompts to explore Instant and Thinking, paste writing into the chatbot to see tone customization, and log out and back in if the model doesn't appear.
  • The update positions ChatGPT to act more like a personalized assistant, with OpenAI claiming GPT‑5.1 improves accuracy and reduces hallucinations, though time will tell how it compares to ChatGPT‑5 after past problematic launches.
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22 Articles

Center

OpenAI launched on the night of 12-13 November a new major version of its language model, GPT 5.1, which brings no fewer than eight different personalities.

·France
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Center

The OpenAI company has released today GPT-5.1, the latest version of its LLM, which seems more focused on correcting the problems of its predecessor, than adding new ones. The two variants are GPT-5.1 Instant and GPT 5.1 Thinking.GPT-5.1 is a model of generational artificial intelligence “warmer and more conversational in talks,” says OpenAI, thus responding to user complaints. It also releases eight personalities and the option to customize the…

·Madrid, Spain
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OpenAI makes GPT-5.1 available for ChatGPT. OpenAI does not know how to deal with people who have AI relationships.

·Germany
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OpenAI has launched its new updated model GPT-5.1, which comes with two new models GPT-5.1 Instant and GPT-5.1 Thinking, designed with improvements in their reasoning capabilities, instructions tracking, as well as in their ability to deliver clearer answers, as well as include more custom conversation styles, such as Professional or Sincere.

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the-decoder.de broke the news in Germany on Wednesday, November 12, 2025.
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