Anthropic
claude-3-5-sonnet-20240620
☠ Dead
Yes. claude-3-5-sonnet-20240620 was shut down on October 28, 2025. Requests to it fail.
On Amazon Bedrock it appears as anthropic.claude-3-5-sonnet-20240620-v1:0, on Google Vertex AI as claude-3-5-sonnet@20240620. Those platforms set their own retirement dates: check their pages.
Recommended replacement: claude-sonnet-5-5
Source: Anthropic deprecation page, announced August 13, 2025.
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