# claude-3-opus@* stops working

Calls to models claude-3-opus@* on Vertex AI stopped working on August 1, 2025.

- API: Vertex AI (aiplatform.googleapis.com)
- Kind: Model retirement
- Takes effect: August 1, 2025
- Calls after that day: fail
- Calls it hits: `models claude-3-opus@*`
- Source: [Deprecations page](https://docs.cloud.google.com/gemini-enterprise-agent-platform/models/deprecations/partner-models)
- Verified: November 6, 2026, against Vertex AI's own pages
- Page: https://www.okapi.bot/providers/vertex-ai/breaking-changes/claude-3-opus-stops-working/

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