GitHub accidentally revealed OpenAI's next-gen GPT-5 AI in a premature blog post. The leak details four new models ahead of the official launch event.

A fleeting post on Microsoft-owned GitHub has lifted the curtain on OpenAI’s next flagship, GPT-5, hours before tonight’s “LIVE5TREAM” event. The changelog entry, now scrubbed but preserved in archival captures,

Reddit users spotted a newly published GitHub blog post declaring the general release of GPT-5 in GitHub models, shortly before it was taken down. A cached version of the post reveals that GPT-5 boasts “advanced autonomous features” and is capable of tackling “sophisticated programming challenges with little user input.”