LangChain Changelog

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May 2025

LangGraph Platform

LangGraph Platform GA: Deploy & manage long-running, stateful agents

LangGraph Platform is now generally available. Build, deploy, and manage long-running, stateful agents — at scale. LangGraph Platform is our purpose-built...

LangGraph Platform

LangGraph Studio v2: Run and debug production traces locally

Our new and improved version of LangGraph Studio v2 allows you to: - Run locally (without using desktop app) - Edit prompts and other configuration directly...

LangGraph Platform

Open Agent Platform: No-code platform to build agents

Open Agent Platform is our latest open-source, no-code agent building platform that lets you create, manage, and use LangGraph agents. Whether you're...

Agent Observability: Gain Insights into Tool Calls & Run Stats

We've launched new levels of visibility for agents to help you understand what your agent is doing! You can now get visibility into tool calls and run stats:...

MCP with streamable HTTP transport

You can now connect LangGraph agents to remote MCP servers reliably via the new recommended transport - streamable HTTP. Check out the docs to see an...

Multimodal support in LangSmith

LangSmith now supports images, PDFs, and audio files across the playground, annotation queues, and datasets — making it easier than ever to build, test, and...

April 2025

LangGraph v0.4: Working with Interrupts

Just shipped LangGraph v0.4! This release brings major upgrades for working with interrupts: • Interrupts are now surfaced automatically when you call...

LangSmith Self-Hosted

LangSmith Self-Hosted v0.10

This release brings alerting, UI‐driven experiment workflows, end-to-end OpenTelemetry support and a host of new capabilities alongside several bug fixes....

Catch Production Failures Early with Alerts in LangSmith

Set up real‑time notifications on error rates, run latency & feedback scores to spot failures before your customers do. If you’re already sending production...

LangChain Python updates: Improved content blocks, retry logic, and more

Now in LangChain Python: Better content blocks, retry logic, integrations & smarter agent support. Core updates: New integrations: Other improvements:

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