The new GPT-5.5 Instant model will replace GPT-3.5 Instant as the default model for ChatGPT ...

GPT-5.5 Instant is OpenAIs latest lightweight AI model built for quick and efficient interactions inside ChatGPT.

ChatGPT's Latest Model Will Supposedly Give Less Annoying Answers ...

OpenAI makes GPT‑5.5 Instant ChatGPT’s default, cutting hallucinations and boosting personalization with memory sources.

OnenAI rolls out GPT 5.5 Instant on Tuesday as a default for Plus and Pro users on the web. The company said the new model will have fewer hallucinated claims and will now show where its responses are ...

OpenAI’s ChatGPT has surpassed 400 million weekly active users, a milestone that underscores the company’s growing reach across both consumer and enterprise markets, according to an X post from chief ...

OpenAI is rolling out GPT-4.1, its new non-reasoning large language model (LLM) that balances high performance with lower cost, to users of ChatGPT. The company is beginning with its paying ...

OpenAI has released its GPT‑3.5 Turbo API to developers as of Monday, bringing back to life the base model that powered the ChatGPT chatbot that took the world by storm in 2022. It will now be ...

OpenAI’s GPT-5.5 Instant is now ChatGPT’s default model, promising fewer hallucinations, shorter answers, better memory ...

OpenAI has quietly delivered one of the most noticeable upgrades to ChatGPT in recent memory. As of May 5, 2026, GPT-5.5 Instant is now the default model for all logged-in ChatGPT users worldwide, ...