Google: Gemini 2.5 Pro Preview 05-06

The google/gemini-2.5-pro-preview-05-06 row left the OpenRouter catalog in the 2026-09-21 fetch, seven days after its last listing. On 2026-09-14 it was still there: active, with no expiry date, and the catalog gives no reason for the removal. The model's own end is not the catalog's to date, and the vendor's record is the older and more specific one. Google's deprecations table, fetched 2026-09-21, gives gemini-2.5-pro-preview-05-06 a release date of May 6, 2025 and a shutdown date of December 2, 2025, and names gemini-3.1-pro-preview as the recommended replacement. The stable gemini-2.5-pro beside it in the same table carries no shutdown date at all.

The sequence is not a rename. Google's changelog, fetched 2026-09-21, has the steps between: the gemini-2.5-pro-preview-06-05 revision arrived on June 5, 2025; on June 26, 2025 "The preview models gemini-2.5-pro-preview-05-06 and gemini-2.5-pro-preview-03-25 are now redirecting to the latest stable version gemini-2.5-pro"; and on November 4, 2025 came the "Deprecation announcement: The following models will be shut down:", whose December 2nd list carries this id alongside the other two previews. The id was folded onto the stable model and then shut down, and the replacement Google's table names is a later generation, not another name for this checkpoint.

OpenRouter's records now fold the slug the same way. Fetched 2026-09-21, openrouter.ai/google/gemini-2.5-pro-preview-05-06 answers HTTP 308 to /google/gemini-2.5-pro, and …/api/v1/models/google/gemini-2.5-pro-preview-05-06/endpoints returns that stable row's record — "id":"google/gemini-2.5-pro", endpoints and all — rather than a record of this row's own. That is not the delisting signature this wiki has recorded for other withdrawn rows, where the row's record survives with an empty endpoint list: there is no separate record here left to survive. The catalog also still lists the 06-05 checkpoint as google/gemini-2.5-pro-preview, under the same December 2 vendor shutdown date, so a live row on this router is not evidence that the vendor still serves the id.

The catalog last read this row active, and the disagreement is which signal counts. OpenRouter serves no status field of its own; the status the catalog shows is derived from expiration_date — absent reads active — and this row never carried one. The retired badge here follows Google's own shutdown date. The feeds: binding stays: if google/gemini-2.5-pro-preview-05-06 is ever a catalog row again it binds straight back to this entry, and the row's last listing remains pinned in the withdrawal record under data/vanished/answered/. The stable model the id was folded onto is carried as Google: Gemini 2.5 Pro; the 06-05 checkpoint is Google: Gemini 2.5 Pro Preview 06-05.