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← Back to all updatesPublished ·Anthropic• Minor
Anthropic retired Claude Opus 4.1; Claude API requests to it now return an error.
The read
If you still route traffic to Opus 4.1, this is no longer degradation management. It is a hard failure.
The frame
Builders should replace Opus 4.1 targets with Opus 5 or face Claude API errors.
Primary source
Anthropic →Keep reading
See what Nova3 builds →Related updates
- Aug 12, 2026Claude Managed Agents webhooks now cover environment and memory store lifecycle events without polling.
- Aug 12, 2026`version` is now optional when updating a Claude Managed Agents agent.
- Aug 12, 2026Anthropic is sunsetting the legacy Claude Console Workbench, with access ending on August 17, 2026.
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