Anthropic
claude-opus-4-1-20250805
☠ Dead
Yes. claude-opus-4-1-20250805 was shut down on August 5, 2026. Requests to it fail.
On Amazon Bedrock it appears as anthropic.claude-opus-4-1-20250805-v1:0, on Google Vertex AI as claude-opus-4-1@20250805. Those platforms set their own retirement dates: check their pages.
Recommended replacement: claude-opus-4-8
Source: Anthropic deprecation page, announced June 5, 2026.
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