langchain-ai/langchainjs @langchain/anthropic@1.5.5

on GitHub

Patch Changes

• #11359 d36ec6a Thanks @talarari! - fix(anthropic): preserve gateway cost on the native stream path

  convertAnthropicStream now surfaces an Anthropic-compatible gateway's numeric usage.cost at response_metadata.usage.cost, matching the chunk path. Token accounting in usage_metadata is unchanged.