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Anthropic: claude-sonnet-4-5-20250929 shuts down 2026-11-30
Official Anthropic page lists a shutdown date of 2026-11-30 (in 45 days) for claude-sonnet-4-5-20250929. Recommended replacement: claude-sonnet-5-5. Source: https://platform.claude.com/docs/en/about-claude/model-deprecations
Source: https://platform.claude.com/docs/en/about-claude/model-deprecations
Event #568
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