DEAD MODELS
← the graveyard
claude-3-5-sonnet-20240620 (Anthropic) was shut down on Oct 28, 2025; calls to it fail. Anthropic recommends claude-sonnet-5-5 instead.

claude-3-5-sonnet-20240620

claude-3-5-sonnet-20240620 (Anthropic) was shut down on Oct 28, 2025; calls to it fail. Anthropic recommends claude-sonnet-5-5 instead.

Provider
Anthropic
Shutdown
Oct 28, 2025 (already shut down)
Announced
Aug 13, 2025
Replace with
claude-sonnet-5-5
  • Dates apply to Anthropic-operated platforms (Claude API, Claude Platform on AWS, Claude on Google Cloud (Anthropic managed), Microsoft Foundry). Bedrock and Vertex AI (Google managed) set their own dates - see provider aws-bedrock / vertex-ai.

Source: https://platform.claude.com/docs/en/about-claude/model-deprecations · report a wrong date

Is claude-3-5-sonnet-20240620 in your code?

$ npx dead-models