Anthropic claude-sonnet-4-5-20250929 retirement deprecation date

Name: Anthropic: claude-sonnet-4-5-20250929 retirement (Deprecation)
Start: 2026-11-30
End: 2026-11-30

claude-sonnet-4-5-20250929 Deprecated September 30, 2026 November 30, 2026

43days left

Change: Deprecation
Effective: Nov 30, 2026
Replacement: none named; check the source
Source: docs.anthropic.com
Vendor's words: claude-sonnet-4-5-20250929 Deprecated September 30, 2026 November 30, 2026

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