LangChain Changelog

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February 2025

MCP Adapters for LangChain and LangGraph

The LangChain MCP Adapters is a Python package that makes it easy to use Anthropic Model Context Protocol (MCP) tools with LangChain & LangGraph. It: This...

February 27, 2025

New ingest-backend service for faster LangSmith performance

We've launched a new dedicated Go service called 'ingest-backend' to handle all run and feedback ingestion in LangSmith. This architectural improvement...

February 26, 2025

LangGraph Supervisor: A Library for Hierarchical Multi-Agent Systems

We've released LangGraph Supervisor, a new lightweight Python library that simplifies building hierarchical multi-agent systems with LangGraph. Key features...

February 26, 2025

âš–ï¸ Start Evaluating LLMs with OpenEvals

Evals are a vital part of bringing LLM apps to production. To make it easier to get started, we launched a new OSS repo: OpenEvals ! OpenEvals contains...

February 26, 2025

ðŸ“Š Group LangSmith experiments by metadata to get valuable insights

Weâ€™ve added a new view that allows you to group experiment results by metadata. Compare the performance of your evaluations across different segments (eg....

February 25, 2025

useStream for integrating LangGraph for your React app

You can now integrate LangGraph into your React application with a single hook. Thread and state management, messages streaming and branching built-in. See...

February 21, 2025

Saved workspace secrets in LangSmith Playground

You can now use secrets saved in your workspace in the LangSmith Playground. Teams can use the same centralized keys used for evaluators to also experiment...

February 20, 2025

LangMem SDK for long-term agent memory

The LangMem SDK is a lightweight Python library that helps your agents learn and improve through long-term memory. It provides tooling to extract information...

February 20, 2025

LangSmith SaaS LangGraph

LangSmith dataset integration in LangGraph Studio

You can now send node inputs/outputs from LangGraph Studio directly to LangSmith datasets for testing! This means you can open LLM runs from LangGraph Studio...

February 8, 2025

ðŸ“Š New LangSmith experiment view for result analysis

The new LangSmith experiment view is now live, which makes it easier to explore your results. Use the experiment view to analyze the results and draw...

February 4, 2025

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