Anthropic
claude-3-opus-20240229
Yes. claude-3-opus-20240229 was shut down on January 5, 2026. Requests to it fail.
On Amazon Bedrock it appears as anthropic.claude-3-opus-20240229-v1:0, on Google Vertex AI as claude-3-opus@20240229. Those platforms set their own retirement dates: check their pages.
Recommended replacement: claude-opus-4-8
Source: Anthropic deprecation page, announced June 30, 2025.
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