# Google Gemini 2.5 Flash (preview 09-25) — deprecation status

> Yes — Gemini 2.5 Flash (preview 09-25) is retired. Google shut it down on February 17, 2026; API requests to it now fail. The recommended replacement is Gemini 3.6 Flash.

The September 2025 preview snapshot of 2.5 Flash, released to test changes ahead of the stable model. Shut down February 2026.

## Facts

| Field | Value |
| --- | --- |
| Provider | Google |
| Model id | `gemini-2.5-flash-preview-09-25` |
| Status | Retired |
| Released | September 25, 2025 |
| Shutdown | February 17, 2026 (163 days ago) |
| Last verified | July 30, 2026 |

## Replacement

- **Gemini 3.6 Flash** (`gemini-3.6-flash`) · recommended — https://modeldeprecations.dev/google/gemini-3.6-flash
  - Google points this snapshot past the stable 2.5 Flash id straight to 3.6 Flash, so there is no reason to migrate to 2.5 Flash as an interim step.
  - Parameters it accepts: https://modelparams.dev/models/google/gemini-3.6-flash

```diff
- "model": "gemini-2.5-flash-preview-09-25"
+ "model": "gemini-3.6-flash"
```

## FAQ

### When did Google Gemini 2.5 Flash (preview 09-25) shut down?

Google Gemini 2.5 Flash (preview 09-25) shut down on February 17, 2026. API requests to it fail from that date onward.

### What replaces Google Gemini 2.5 Flash (preview 09-25)?

Google recommends Gemini 3.6 Flash (`gemini-3.6-flash`) as the replacement for Google Gemini 2.5 Flash (preview 09-25). Google points this snapshot past the stable 2.5 Flash id straight to 3.6 Flash, so there is no reason to migrate to 2.5 Flash as an interim step.

### Is Google Gemini 2.5 Flash (preview 09-25) still available?

No. Google Gemini 2.5 Flash (preview 09-25) is retired and no longer served — it was shut down on February 17, 2026. Calls to it return an error.

### How do I migrate from Google Gemini 2.5 Flash (preview 09-25) to gemini-3.6-flash?

Swap the model id in your API call: replace "gemini-2.5-flash-preview-09-25" with "gemini-3.6-flash". Google points this snapshot past the stable 2.5 Flash id straight to 3.6 Flash, so there is no reason to migrate to 2.5 Flash as an interim step.

## Sources

- [Gemini API deprecations](https://ai.google.dev/gemini-api/docs/deprecations) — accessed 2026-07-30

---

Canonical page: https://modeldeprecations.dev/google/gemini-2.5-flash-preview-09-25
JSON: https://modeldeprecations.dev/api/v1/models/google/gemini-2.5-flash-preview-09-25.json