LangChain Changelog

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December 2025

Unified cost tracking for LLMs, tools, retrieval

We’ve added full-stack cost tracking to LangSmith to make it easier to understand and monitor spend across complex agent applications. LangSmith now...

December 2, 2025

LangChain 1.1

LangChain v1.1.0 is now available This release makes agent development more reliable, more structured, and more context-aware — powered by a new...

December 2, 2025

November 2025

Sandboxes for Deep Agents

We’ve added full support for executing DeepAgent code inside remote sandboxes — providing safe, isolated, reproducible environments for complex agent...

November 30, 2025

Okta SCIM + SSO Integration

LangSmith is now live on the Okta Integration Network (OIN). Enterprise teams that use Okta can now: This makes it much simpler to centralize access...

November 17, 2025

October 2025

No Code Agent Builder in LangSmith, now in private preview

We're expanding who can build agents beyond developers with LangSmith Agent Builder— a no-code agent-building experience now in private preview. Build real...

October 29, 2025

`deepagents` 0.2 release for more autonomous agents

deepagents is our agent harness for building autonomous, long-running agents that tackle complex, open-ended tasks over extended time horizons. Our 0.2...

October 28, 2025

Discover patterns in production traces with the Insights Agent

Traces contain valuable signal about an agent's capabilities and how users engage with it. Insights Agent helps you find signal into your traces by analyzing...

October 23, 2025

LangSmith Self-Hosted

LangSmith Self-Hosted v0.12

This release includes improvements to evaluations: online multi-turn evaluations, composite feedback scores and JavaScript code evals. It also includes...

October 23, 2025

Evaluate end-to-end agent interactions with Multi-turn Evals

Today, we're launching Multi-turn Evals to help you measure how your agent is performing across an entire end-to-end interaction. Multi-turn evals are online...

October 23, 2025

LangGraph 1.0 is now generally available

LangGraph 1.0 is the first stable major release in the durable agent framework space —a major milestone for production-ready AI systems. After more than a...

October 22, 2025

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