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CATCH #1508 DETECTED SEP 21, 2026 21:18 UTC
THE CATCHscore 10/10
EXHIBIT 1508 · FLASH
Sep 21, 2026 21:18 UTC openapi https://raw.githubusercontent.com/openai/openai-openapi/master/openapi.yaml
OpenAI's API spec now lists a new model: gpt-5.1-mini. This is a strong signal for an upcoming, unannounced model.

READY TO POST:

looks like openai just added 'gpt-5.1-mini' to their api spec. a new model on the horizon?

whoa, spotted gpt-5.1-mini in the openai api. could be a smaller, faster version of gpt-5.1?

EVIDENCE — the receipts
OpenAI API spec (https://raw.githubusercontent.com/openai/openai-openapi/master/openapi.yaml): 1 additions to the official API spec

[new models] (1)
  + gpt-5.1-mini

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