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

UPDATE: Aug. 7, 2025, 3:30 p.m. EDT GPT-5 is now available to use. We've updated this story with additional information on the rollout. The newest version of ChatGPT is here, and you can try it with ...

OpenAI started rolling out the GPT-5 models to ChatGPT users soon after its live event ended on Thursday. The update took a couple of days to deploy, and GPT-5 models became widely available around ...

In a significant move to strengthen safeguards around advanced AI systems, OpenAI has introduced the GPT-5.5 Bio Bug Bounty ...

OpenAI introduced a major update to its GPT-5 series of artificial intelligence (AI) models on Thursday. Regarding the new ...

After years of rumors and speculation, OpenAI’s next-gen GPT-5 language model is finally here. But while many of those early rumors claimed that the next major ChatGPT model would achieve artificial ...

GPT-5.4's 83% score suggests AI rivals expert professionals. Tests span nine industries and 44 real-world occupations. New capabilities boost coding, tools, and computer control. It seems like only ...

On Thursday, OpenAI announced GPT-5 and three variants—GPT-5 Pro, GPT-5 mini, and GPT-5 nano—what the company calls its “best AI system yet,” with availability for some of the models across all ...