langchain-ai/langchainjs (langchain@1.6.2) & anthropics/anthropic-sdk-typescript (sdk-v1.6.0) — AI Engineering & Agent Runtimes

Executive Signal Synthesis

Ships @langchain/core@langchain@1.6.2 with upstream runt. Drop-in upgrade. Migration: None. In parallel, anthropics/anthropic-sdk-typescript (sdk-v1.6.0): api: add error code for ramp limit errors. Drop-in upgrade. Migration: None.

Architectural Deep-Dive & Systems Impact

Ships @langchain/core@langchain@1.6.2 with upstream runtime refinements and stability fixes from langchain-ai/langchainjs.

Updates TypeScript declarations and internal module exports for langchain@1.6.2.

api: add error code for ramp limit errors

api: add error codes for External Key validation failures

Actionable Upgrade & Verification Checklist

2 steps

01Update @langchain/core to langchain@1.6.2.
02Update @anthropic-ai/sdk to sdk-v1.6.0.

Verification & Upgrade Command Snippet

npm install @langchain/core@langchain@1.6.2
npm install @anthropic-ai/sdk@sdk-v1.6.0