LaunchDevelopersSeptember 25, 2026

Claude Code 2.1.283 adds model-locking and gateway headers

Read original source →code.claude.com

Release 2.1.283 ships 94 CLI changes, including availableModelsMatch="exact", which locks an availableModels entry to the named model version so new releases stay blocked until listed. A new deniedModels setting blocks specific models even when availableModels allows them.

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