"OpenAI is releasing GPT-5.1 today, an update to the flagship model it released in August. OpenAI calls it an "upgrade" to GPT-5 that "makes ChatGPT smarter and more enjoyable to talk to." The new models include GPT-5.1 Instant and GPT-5.1 Thinking. The former is "warmer, more intelligent, and better at following your instructions" than its predecessor, per an OpenAI release, and the latter is "now easier to understand and faster on simple tasks, and more persistent on complex ones.""
"The two new models will start rolling out to ChatGPT users this week, and the old GPT-5 models will be available for three months in ChatGPT's legacy models dropdown menu before they disappear. As part of the update, OpenAI also said it would expand its personality presets for the conversational tone of the models. The total list of options now includes Default, Professional, Friendly, Candid, Quirky, Efficient, Nerdy, and Cynical, per the company's blog post. OpenAI also said in a release that it would also debut an "experiment for new ways to fine-tune ChatGPT's style directly from settings," which some users will begin to be able to access this week."
OpenAI released GPT-5.1, a follow-up to GPT-5, introducing two variants: GPT-5.1 Instant and GPT-5.1 Thinking. GPT-5.1 Instant delivers warmer, more instruction-following responses, while GPT-5.1 Thinking is clearer, faster on simple tasks, and more persistent on complex tasks. Queries will, in most cases, be auto-matched to the variant best suited to answer them. The new models begin rolling out to ChatGPT users this week, with legacy GPT-5 models remaining available for three months. OpenAI expanded conversational personality presets to eight options and is piloting a settings-based experiment to fine-tune style for some users.
Read at The Verge
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