Ship reliable agents
Observe, evaluate, and deploy agents with LangSmith,
the agent engineering platform.
Get started with
LangSmith for free
Our free plan includes:
- 5,000 free traces per month
- Tracing to debug agent execution
- Online and offline evals
- Monitoring and alerting
LangSmith powers top engineering teams, from AI startups to global enterprises
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.
Framework neutral
Keep your current stack. LangSmith works with your preferred open-source framework or custom code.
LangSmith Agent Engineering Platform
Improve agent performance across the development lifecycle. Bring your preferred framework or custom code – LangSmith works with any agent stack using our TypeScript and Python SDKs.
Open Source Frameworks
Build and ship agents fast with any model provider. Use high-level abstractions or fine-grained control as needed.
Explore top agent use cases
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.
Copilots
Build native co-pilots into your application to unlock new end user experiences for domain-specific tasks.
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.
Rakuten’s GenAI platform, built with LangGraph and LangSmith, lets employees across 70+ businesses create AI agents.
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.