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CATCH #1537 DETECTED SEP 22, 2026 17:18 UTC
THE CATCHscore 10/10
EXHIBIT 1537 · FLASH
Sep 22, 2026 17:18 UTC model api OpenRouter
OpenRouter's API added new model IDs for Anthropic's unreleased Claude Opus 5.5 and a batch version, suggesting an imminent release.

READY TO POST:

looks like openrouter just leaked claude opus 5.5 and a batch api version. anthropic must be gearing up for a release.

claude opus 5.5 just popped up in the openrouter api. time to keep an eye out for an official announcement from anthropic!

EVIDENCE — the receipts
New model id(s) appeared in OpenRouter's API model list:
https://openrouter.ai/api/v1/models

  + anthropic/claude-opus-5.5
  + anthropic/claude-opus-5.5:batch

A model id in a provider's live API usually predates the public announcement. High-confidence pre-announcement signal.

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