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Vertex AI claude-3-7-sonnet model retirement

Stopped workingSubscribe to Vertex AIShare

Calls to the model claude-3-7-sonnet on Vertex AI stopped working on May 11, 2026.


The error you get

What Vertex AI answers a call to claude-3-7-sonnet once the model is gone, as recorded from real responses:

HTTP 404
{"error":{"code":404,"message":"Publisher model `projects/{project}/locations/{region}/publishers/google/models/claude-3-7-sonnet` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region.","status":"NOT_FOUND"}}

Facts

API
Vertex AI aiplatform.googleapis.com
Model
claude-3-7-sonnet
Kind
Model retirement
Takes effect
May 11, 2026
Calls after that day
Fail
Source
Deprecations page
Last updated
Verified
, against Vertex AI's own pages

Questions

When does claude-3-7-sonnet shut down?

Calls to the model claude-3-7-sonnet on Vertex AI stopped working on May 11, 2026.

What happens to calls after May 11, 2026?

They have failed since May 11, 2026.

What error does claude-3-7-sonnet return once it is shut down?

Vertex AI answers HTTP 404: "Publisher model `projects/{project}/locations/{region}/publishers/google/models/claude-3-7-sonnet` was not found or your project does not have access to it. Ensure you are using a valid model name and that the model is available in the specified region.". 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.


claude-3-7-sonnet on other APIs 1

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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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