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Canonical AI event

LangChain Updates Gateway Routing for Vertex AI in Node and Web Packages

The LangSmith gateway routing is now available in the Node and web packages of LangChain's Google Vertex AI integration.

20 Oct 20261 verified claims1 sources1 observations
What happened

The official source reports this update: @langchain/google-vertexai-web@2.3.3. Patch Changes #11988 2a37b67 Thanks @jacoblee93 ! - Backport LangSmith gateway routing to ChatVertexAI in the Node and web packages through @langchain/google-common , including streaming, custom gateway URLs, and explicit regional project configuration. Honor custom endpoints in Vertex Express requests. Updated dependencies []: @langchain/google-webauth@2.3.3

Why it matters

This official update documents a development concerning @langchain/google-vertexai-web@2.3.3. Its practical significance depends on the scope and evidence stated by the source.

What to watch next

Read the official source update and verify its stated scope, evidence and timing before acting on it.

Connected knowledge

Entities affected by this event

Langchainjssubject
Continue this topic
agents-softwareLangChain Backports Gateway Routing to ChatVertexAI20 Oct 2026agents-softwareLangChain 1.0.53 now requires LangSmith 0.11.0 or higher.16 Oct 2026agents-softwareThe MCPClientError now includes the SSE attempt's SDK error as its cause.6 Oct 2026agents-softwareThe LangChain library now retries failed tool calls in createAgent.27 Sept 2026agents-softwareOpenRouter 0.4.15 updates OpenAI dependency to 1.6.027 Sept 2026agents-softwareThe Anthropic library now accepts SystemMessages at any position in the message list.22 Sept 2026
Evidence trail

Sources behind the event

LangChain.js official releases@langchain/google-vertexai-web@2.3.3
Editorial presentation

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