OpenAI launches GPT-5.1 in Instant and Thinking modes

OpenAI is launching "warmer and more emphatic" GPT-5.1.
OpenAI have stopped posting benchmarks for their new models, but they should do better in AIME 2025 and Codeforces. (Picture: OpenAI)
Available for paid tiers today, GPT-5.1 Instant will become the new default model in ChatGPT.

OpenAI are uncharacteristically not posting any benchmarks on their launch page, simply describing both models as «more capable and useful,» and «more intelligent.»

Both models are also supposed to be «warmer and more emphatic.»

People want friendly bots
— We heard clearly from users that great AI should not only be smart, but also enjoyable to talk to, OpenAI writes.

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Rumor roundup for Monday, November 10.

(picture: Adobe)
Not much to publish today. There are, however, lots of rumors on the grapevine:

There’s talk about Google deprecating models like Gemini 2.5 Pro and its whole family by the end of November to make way for the upcoming Gemini 3.0, said by CEO Sundar Pichai to arrive this year. Many say a preview is launching soon.

There is even a purported leak of Nano Bana 2, the next generation of Gemini’s image generator, and a lot of people are blown out of the water by it.

Some people are also claiming to have spotted GPT-5.1 in OpenAI source code, which could mean we are getting closer to release of that model, too.

Then rumor has it that the new Kimi 2 model from China, said to have been developed for a paltry 4.6 million dollars, is going head to head with GPT-5 in a benchmark collection. It’s made by a company called Moonshot that is backed by Alibaba.

None of this is confirmed news, though, and I’ll be closely watching for anything official, which might be coming sooner than we think.