# gemini-1.5-flash-latest

Calls to the model gemini-1.5-flash-latest stopped working on September 29, 2025.

## The error Gemini API returns once gemini-1.5-flash-latest is gone

Once it is closed to new API keys: HTTP 404

```json
{"error":{"code":404,"message":"This model models/gemini-1.5-flash-latest is no longer available to new users. Please update your code to use a newer model for the latest features and improvements.","status":"NOT_FOUND"}}
```

Once it is shut down: HTTP 404

```json
{"error":{"code":404,"message":"models/gemini-1.5-flash-latest is not found for API version v1beta, or is not supported for generateContent. Call ModelService.ListModels to see the list of available models and their supported methods.","status":"NOT_FOUND"}}
```

## What to use instead

Move to gemini-3.8-flash. gemini-2.5-flash, also named, is closed to some callers (Google: "we are limiting access to the 2.5 models to users who have actively used them in the past." Projects that already called it keep it; new projects are told to use 3.5 Flash-Lite or 3.8 Flash.). 2.5 Flash is the direct successor, but Google now limits the 2.5 models to users who already used them: a project that never called it cannot move to it, and should take gemini-3.8-flash instead.

- API: Gemini API (generativelanguage.googleapis.com)
- Model: gemini-1.5-flash-latest
- Kind: Model retirement
- Takes effect: September 29, 2025
- Calls after that day: fail
- Calls it hits: `model gemini-1.5-flash-latest`
- Source: [models.dev](https://modeldeprecations.dev/api/v1/models.json?provider=google)
- Verified: November 6, 2026, against Gemini API's own pages
- Page: https://www.okapi.bot/models/gemini-api/gemini-1.5-flash-latest/

Okapi finds the calls this change hits in your repo and opens the pull request with the fix: https://github.com/apps/okapi-agent