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Claude Sonnet 4.5 Discontinued

·2026.05.22 00:54

Key point

Anthropic's Claude Sonnet 4.5 model will become unavailable in chat starting May 26, being replaced by Sonnet 4.6.

Details

Starting May 26, the Claude Sonnet 4.5 model will no longer be available in the chat interface. Existing Sonnet 4.5 users will be automatically switched to Sonnet 4.6.

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