OpenAI /v1/models adds aurora-blue, -green, -red-alpha checkpoints

Chris @ChrisGPTOriginally posted 2026.10.18

Open original on X

Oct 15’s gpt-6-astra-api-priv-ev3 sighting had more than a model-list entry by the way. a separate tracker polling OpenAI’s /v1/models added aurora-blue-alpha, -green-alpha and -red-alpha on Oct. 18. These are checkpoints are seemingly what OpenAI plans to release as a response to Fable 5.5