Build LLM-powered applications
Visit WebsiteThe Bottom Line
Entry price
From $39/mo (free plan available)
Biggest pro
Great for AI apps
Biggest con
Fast changing API
TL;DR - LangChain
- Platform for building, evaluating, and deploying AI agents.
- Offers open-source frameworks (LangChain, LangGraph) and a commercial platform (LangSmith) for end-to-end agent development.
- Provides observability, evaluation, and scalable deployment for reliable, production-ready AI agents.
What is LangChain?
Available on: Web
Pros & Cons
Pros
- Great for AI apps
- Active development
- Large community
Cons
- Fast changing API
- Can be complex
Ratings Across the Web
Ratings aggregated from independent review platforms. Learn more
Key Features
Pricing Plans
Developer
Free
Getting started
- 5,000 traces/month
- Basic features
- Community support
- LangSmith included
Plus
$39/month
Growing projects
- 100,000 traces/month
- All features
- Email support
- Longer retention
Enterprise
null
Large scale
- Unlimited traces
- SSO/SAML
- SLA
- Dedicated support
Reviews
Across 41 verified user reviews on G2, SourceForge
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LangChain FAQ
Is LangChain free?
Source: langchain.com