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Introduction

LangChain is an engineering platform and open-source framework designed to streamline the development, testing, and deployment of AI agents. It offers tools for observability, evaluation, and deployment, catering to both AI startups and global enterprises.

Key Features:

  • LangSmith Observability: Provides clear visibility into each step of an agent's process, aiding in debugging and understanding agent behavior.
  • LangSmith Evaluation: Facilitates the evaluation of agent responses for accuracy and quality, enabling iterative improvements.
  • LangSmith Deployment: Offers infrastructure designed for long-running agent workloads, including memory management, auto-scaling, and security features.
  • Model Neutrality: Allows swapping models, tools, and databases without requiring extensive code rewriting, ensuring future-proof AI solutions.
  • Open Source Frameworks: Includes LangChain for quick agent deployment and LangGraph for building custom agent workflows.

Use Cases:

  • Copilots: Integrating native co-pilots into applications for domain-specific tasks.
  • Enterprise GPT: Providing employees with access to information and tools in a compliant manner.
  • Customer Support: Enhancing the efficiency of support teams by automating customer request handling.
  • Research: Accelerating data synthesis and insight discovery for knowledge workers.
  • Code Generation: Automating code writing, refactoring, and documentation to speed up software development.
  • AI Search: Offering personalized guidance to users for product or information discovery.

Latest News

LangSmith LLM Gateway: runtime controls for production agents

LangSmith LLM Gateway: runtime controls for production agents

8/5/2026

# LangSmith LLM Gateway: runtime controls for production agents Martha Janicki Ramon Petgrave 7 min Go back to blog Create agents Share ## Key Takeaways - Avoid provider lock-in — one gateway for closed and open weight models, centralized controls, and the flexibility to change model provid...

July 2026: LangChain Newsletter — NemoClaw Blueprint, OpenWiki Brains, and More

July 2026: LangChain Newsletter — NemoClaw Blueprint, OpenWiki Brains, and More

8/5/2026

# July 2026: LangChain Newsletter — NemoClaw Blueprint, OpenWiki Brains, and More Published: 2026-07-23T00:00:00Z Source: langchain.dev (langchain.com) Language: en ## Story July 2026: LangChain Newsletter — NemoClaw Blueprint, OpenWiki Brains, and More [https://www.langchain.com/](https://www.l...

How Stripe Built Kai on Deep Agents in 1 Week

How Stripe Built Kai on Deep Agents in 1 Week

8/5/2026

# How Stripe Built Kai on Deep Agents in 1 Week Published: 2026-08-03T00:00:00Z Source: langchain.dev (langchain.com) Language: en ## Story How Stripe Built Kai on Deep Agents in 1 Week [https://www.langchain.com/](https://www.langchain.com/) Products [LangSmith Platform](https://www.langchain...

Deep Agents v0.7

Deep Agents v0.7

8/5/2026

Deep Agents v0.7 Deep Agents Open Source Agent Architecture # Deep Agents v0.7 Sydney Runkle 6 min Go back to blog Create agents Share Today we're shipping deep agents v0.7. This release simplifies the base harness, resulting in 65% fewer base input tokens at comparable performance. Buil...

Trace voice agents in LangSmith

Trace voice agents in LangSmith

8/5/2026

Trace voice agents in LangSmith # Trace voice agents in LangSmith Caroline di Vittorio 4 min Go back to blog Create agents Share Today we're launching Python integrations to trace four popular voice agent frameworks in LangSmith: Pipecat, LiveKit, OpenAI Realtime, and Gemini Live with the Go...

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FAQ

User Reviews

4.7/5.0
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Pricing

Pricing Model: Freemium, Subscription, Usage-based, Custom. Special pricing available for Seed stage startups and educational institutions.

Developer

For solo developers getting started.

$0 / seat per month
monthly

Plus

For teams building and deploying agents.

$39 / seat per month
monthly

Enterprise

For teams with advanced hosting, security, and support needs.

Custom
annual

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