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TechOpenAI stages gpt-6-astra model on Responses API, 404 error hints at upcoming launch
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A developer has reported that a new AI model named "gpt-6-astra" has been staged on the OpenAI Responses API. The claim is based on a technical observation: querying the API for "gpt-6-astra" returns a 404 Not Found error, while garbage or non-existent model slugs return a 400 Bad Request error. This same 404 response is also returned for "5.6 Cyber", a model known to exist. The developer notes a similar quirk existed in the Bedrock API prior to the launch of the Fable 5.1 model. This evidence suggests that OpenAI is preparing to release a new model, potentially named GPT-6 Astra, though no official announcement has been made. The post provides a technical method for detecting pre-release models based on distinct API error responses.
Source report
The OpenAI Responses API has returned a 404 Not Found error for the model slug "gpt-6-astra", indicating it has been staged on the platform.
Key Details
- The slug "gpt-6-astra" returns a 404 error, while garbage or non-existent slugs return 400 errors.
- A 404 is also returned for "5.6 Cyber", a model known to exist.
- This behavior mirrors a similar quirk observed in the Bedrock API, which was used to discover Fable 5.1 one day prior to its launch.
Source
synthwaveddNeutral / independent
Part of this Story
OpenAI stages GPT-6 Astra model on API, hinting at imminent release despite internal naming debate