gemini-robotics-er-1.6-preview model retirement
Stopped workingSubscribe to Gemini APIShare
On August 31, 2026, the model gemini-robotics-er-1.6-preview reached its shutdown date and stopped working. Calls targeting model gemini-robotics-er-1.6-preview fail since that date.
The error you get
What Gemini API answers a call to gemini-robotics-er-1.6-preview once the model is gone, as recorded from real responses:
{"error":{"code":404,"message":"This model models/gemini-robotics-er-1.6-preview 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"}}{"error":{"code":404,"message":"models/gemini-robotics-er-1.6-preview 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-robotics-er-1.6-preview
Move to gemini-robotics-er-2-preview, recommended by Google.
In Gemini API's words
Model: gemini-robotics-er-1.6-preview; Release date: April 14, 2026; Shutdown date: August 31, 2026; Recommended replacement: gemini-robotics-er-2-preview
Facts
- API
- Gemini API
generativelanguage.googleapis.com - Model
gemini-robotics-er-1.6-preview- Released
- April 14, 2026 (models.dev)
- Kind
- Model retirement
- Takes effect
- August 31, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , against Gemini API's own pages
Questions
When does gemini-robotics-er-1.6-preview shut down?
Calls to the model gemini-robotics-er-1.6-preview stopped working on August 31, 2026.
What happens to calls after August 31, 2026?
They have failed since August 31, 2026.
What error does gemini-robotics-er-1.6-preview return once it is shut down?
Gemini API answers HTTP 404: "This model models/gemini-robotics-er-1.6-preview 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.
When was gemini-robotics-er-1.6-preview released?
gemini-robotics-er-1.6-preview was released on April 14, 2026, according to models.dev.
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.