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What to Do Before Claude Sonnet 4.5 Shuts Down on November 30, 2026

Anthropic retires claude-sonnet-4-5-20250929 on the Claude API on Nov 30, 2026 . After that date, requests to it fail. Anthropic's recommended replacement is claude-sonnet-5-5 . Free Mon/Wed/Fri email + breaking shutdown alerts (every date linked to the official source): Subscribe at aideprecations…

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  1. 2026-11-06 07:23 · DEV Community — AI
    What to Do Before Claude Sonnet 4.5 Shuts Down on November 30, 2026

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