Vertex AI
claude-3-5-sonnet@* model retirement
Stopped workingSubscribe to Vertex AIShare
Calls to models claude-3-5-sonnet@* on Vertex AI stopped working on February 19, 2026.
Calls it hits
models claude-3-5-sonnet@*
Facts
- API
- Vertex AI
aiplatform.googleapis.com - Kind
- Model retirement
- Takes effect
- February 19, 2026
- Calls after that day
- Fail
- Source
- Deprecations page
- Last updated
- Verified
- , against Vertex AI's own pages
Questions
When does this change take effect?
Calls to models claude-3-5-sonnet@* on Vertex AI stopped working on February 19, 2026.
What happens to calls after February 19, 2026?
They have failed since February 19, 2026.
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.