gpt-6-astra spotted in OpenAI API error codes before launch

leo 🐾 @synthwaveddOriginally posted 2026.09.03

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🚨 BREAKING: "gpt-6-astra" has been staged on the OpenAI API The OpenAI Responses API now returns a 404 Not Found for "gpt-6-astra", where garbage/actually non-existent slugs return 400s - a 404 is also returned for 5.6 Cyber, which we know exists. A similar quirk exists in the Bedrock API used to find Fable 5.1 a day prior to launch.

This post quotes another post: x.com/synthwavedd/status/2095106266368492012