gemini-1.0-flash shut down Oct 14, 2026 (Gemini API)

The error you get

What Gemini API answers a call to gemini-1.0-flash once the model is gone, as recorded from real responses:

Once it is closed to new API keys: HTTP 404

{"error":{"code":404,"message":"This model models/gemini-1.0-flash 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

{"error":{"code":404,"message":"models/gemini-1.0-flash 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 of gemini-1.0-flash

gemini-2.5-flash, named first, 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.). No replacement that holds is named yet. Flash has stayed the name for the fast tier across four generations, so this is the natural target. Google now limits 2.5 Flash to projects that already used it, so a new project should take the current Flash id.

Facts

API: Gemini API generativelanguage.googleapis.com
Model: gemini-1.0-flash
Kind: Model retirement
Takes effect: October 14, 2026
Calls after that day: Fail
Source: models.dev
Last updated: October 19, 2026
Verified: November 6, 2026, against Gemini API's own pages

Questions

When does gemini-1.0-flash shut down?

Calls to the model gemini-1.0-flash stopped working on October 14, 2026.

What happens to calls after October 14, 2026?

They have failed since October 14, 2026.

What error does gemini-1.0-flash return once it is shut down?

Gemini API answers HTTP 404: "This model models/gemini-1.0-flash is no longer available to new users. Please update your code to use a newer model for the latest features and improvements.". Send another model to fix it.

How do I find the calls this hits in my code?

Okapi reads your repository, finds the calls this change hits and opens a pull request with the fix. It never commits to your branches: every change comes as a pull request you review.

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You fixed this one by hand.

Okapi opens the pull request with the fix before the next breaking change reaches your code.

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gemini-1.0-flash model retirement