The official source reports this update: @langchain/aws@1.4.5. Patch Changes #11307 e927605 Thanks @taoche ! - fix(aws): add claude-sonnet-5, claude-opus-5, and claude-haiku-5 to supportedToolChoiceValuesForModel
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LangChain AWS Adds Claude Model Variants to Supported Tool Choices
The AWS LangChain library v1.4.5 now supports Claude-Sonnet-5, Claude-Opus-5, and Claude-Haiku-5.
1 Sept 20261 verified claims1 sources1 observations
This official update documents a development concerning @langchain/aws@1.4.5. Its practical significance depends on the scope and evidence stated by the source.
Read the official source update and verify its stated scope, evidence and timing before acting on it.
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