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Claude Sonnet 4.5's dated ID shuts down Nov 30. Dated IDs or aliases?

Most model APIs give you two ways to name a model: a dated snapshot , like claude-sonnet-4-5-20250929 an alias , like claude-sonnet-4-5 , which points at whatever the vendor currently serves under that name Claude Sonnet 4.5's dated snapshot shuts down on November 30, 2026 , so if your code uses it…

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  1. 2026-11-13 15:00 · DEV Community — AI
    Claude Sonnet 4.5's dated ID shuts down Nov 30. Dated IDs or aliases?

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