Engineer reliable agents
Ship agents to production with LangChain's comprehensive platform for agent engineering.
LangChain products power top engineering teams, from AI startups to global enterprises
Granular visibility & control
See exactly what's happening at every step of your agent. Steer your agent to accomplish critical tasks the way you intended.
Fast iteration
Rapidly move through build, test, deploy, learn, repeat with workflows across the entire agent engineering lifecycle.
Durable performance
Ship at scale with agent infrastructure designed for long-running workloads and human oversight.
The Agent Engineering Stack
LangGraph
Agent orchestration and runtime
LangGraph puts you in control with low-level primitives to build custom agent workflows
LangChain
Pre-built agent architectures and integrations
Move faster with LangChain using templates for common agent architectures and model integrations
LangSmith
Dev tools for shipping reliable agents
LangSmith offers agent observability, evaluation, and deployment for rapid iteration.
Copilots
Build native co-pilots into your application to unlock new end user experiences for domain-specific tasks.
Enterprise GPT
Give all employees access to information and tools in a compliant manner so they can perform their best.
Customer Support
Improve the speed and efficiency of support teams that handle customer requests.
Research
Synthesize data, summarize sources, and uncover insights faster for knowledge work.
Code generation
Accelerate software development by automating code writing, refactoring, and documentation for your team.
AI Search
Offer a concierge experience to guide users to products or information in a personalized way.
Get inspired by companies who have done it.
Teams building with LangChain products are driving operational efficiency, increasing discovery & personalization, and delivering premium products that generate revenue.
Klarna's AI assistant reduced customer query resolution time by 80%, powered by LangSmith and LangGraph.
Elastic’s AI security assistant, built with LangSmith and LangGraph, cut alert response times for 20,000+ customers.
Replit's AI Agent serves 30+ million developers. Their AI engineers rely on LangSmith to debug complex traces.
Learn alongside the 1 million+ practitioners who are pushing the industry forward
90M
Monthly downloads
100k+
GitHub stars
#1
Downloaded agent framework
1000
Integrations
Ready to start shipping reliable agents faster?
Get started with tools from the LangChain product suite for every step of the agent development lifecycle.