OpenAI says the all-new GPT-5.1 is “warmer” and has more “personality” options.

OpenAI today releases GPT-5.1, an update to the main model Released in August. OpenAI calls it an “upgrade” to GPT-5 that “makes ChatGPT smarter and more fun to talk to.”

New models include GPT-5.1 Instant and GPT-5.1 Thinking. The former is “warmer, smarter, and better at following your instructions” than its predecessor, according to an OpenAI release, and the latter is “now easier to understand, faster on simple tasks, and more persistent on complex ones.” Queries will, in most cases, be automatically matched to models that may be able to answer them best. The two new models will begin rolling out to ChatGPT users this week, and the legacy GPT-5 models will be available for three months in the Legacy Models drop-down menu in ChatGPT before disappearing.

As part of the update, OpenAI also said it will expand personality presets for models’ conversational tone. The overall list of options now includes Default, Professional, Friendly, Frank, Quirky, Effective, Obsessive, and Sarcastic, depending on the company’s requirements. Blog post. OpenAI also said in a statement that it will also launch a “trial for new ways to adjust ChatGPT style directly from Settings,” which some users will start accessing this week.

“With more than 800 million people using ChatGPT, we have moved beyond the point of one-size-fits-all,” Fidji Simo, the company’s chief applications officer, wrote in Substack on Wednesday. mail.

While OpenAI CEO Sam Altman was impressed by the announcement of GPT-5 in August, it was released Failed noise test. Many ChatGPT users were not impressed, especially with the incremental improvements, and expressed frustration about OpenAI’s choice to make it the default model for ChatGPT. There was a lot of pressure that prompted OpenAI to decide to do this Returns GPT-4o Alternatively, one day after the launch of GPT-5.

Microsoft, OpenAI’s strategic AI partner, is increasingly looking for a competitor Models of Anthropic After GPT-5 failed to raise the bar enough. Anthropic models now help enhance the role of co-pilot, Github copilotCo-Pilot Studio, and A New office agent Able to produce Word and PowerPoint documents from Microsoft’s Copilot chat interface.

The announcement of GPT-5.1 comes just weeks after OpenAI launched its AI-powered web browser. ChatGPT Atlas. It has a “Proxy Mode” that is currently only available to ChatGPT Plus and Pro users, and acts very much like the company’s trigger tool to take actions in the browser on users’ behalf.