LangChain
Composable framework for building with LLMs, including orchestration for agentic workflows and infrastructure for deploying at scale.
At a Glance
Pricing
Get started with LangChain at no cost with Self-hosted deployment and Up to 100k nodes executed per month.
Engagement
Available On
Alternatives
Developer
Updated Feb 2026
About LangChain
LangChain is a powerful open-source framework designed to simplify the development of applications powered by large language models (LLMs). It provides a complete set of interoperable building blocks for creating context-aware, reasoning applications with vendor optionality. LangChain connects LLMs to company data and APIs, enabling rapid prototyping to production deployment with methods like RAG, agents, and complex orchestration workflows.
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Pricing
Free Plan Available
Get started with LangChain at no cost with Self-hosted deployment and Up to 100k nodes executed per month.
- Self-hosted deployment
- Up to 100k nodes executed per month
- Horizontally scalable task queues
- State and memory APIs
- Real-time streaming
Free Plan Available
Get started with LangChain at no cost with 1 developer seat and 5k traces per month included.
- 1 developer seat
- 5k traces per month included
- 14-day trace retention
- Debugging traces
- Dataset collection
Free Plan Available
Get started with LangChain at no cost with Open-source framework and MIT license.
- Open-source framework
- MIT license
- All core LangChain features
- Community support
- 600+ integrations
LangSmith Plus
LangSmith Plus plan with Up to 10 seats and 10k traces per month included.
- Up to 10 seats
- 10k traces per month included
- All Developer features
- Higher rate limits
- Up to 3 workspaces
- Email support
- Pay-as-you-go: $0.50/1k base traces, $5.00/1k extended traces
LangGraph Platform Plus
LangGraph Platform Plus plan with Cloud SaaS deployment and Requires LangSmith Plus ($39/user/month).
- Cloud SaaS deployment
- Requires LangSmith Plus ($39/user/month)
- 1 free Dev deployment included
- Standby charges: $0.0007/min (Dev), $0.0036/min (Prod)
- All Developer features
- Cron scheduling
- Auth to call LangGraph APIs
- Smart caching
LangSmith Enterprise
Enterprise-grade solution with Custom pricing and All Plus features and dedicated support.
- Custom pricing
- All Plus features
- Custom SSO
- SLA
- Self-hosted deployment options
- Custom rate limits
- Team trainings
- Shared Slack channel
- Dedicated customer success manager
LangGraph Platform Enterprise
Enterprise-grade solution with Custom pricing and Multiple deployment options and dedicated support.
- Custom pricing
- Multiple deployment options
- Fully self-hosted or hybrid
- SLA for managed offerings
- All Plus features
- Team trainings
- Shared Slack channel
- Dedicated customer success engineer
Capabilities
Key Features
- LangChain Expression Language (LCEL) for composable chains
- Chat models integration with 600+ providers
- Vector stores and embedding models
- Document processing and retrieval systems
- Agent construction and orchestration
- Context and memory management
- Tool and API integration capabilities
- Chain-of-thought implementation
- Multi-step workflow automation
- Retrieval Augmented Generation (RAG)
- Human-in-the-loop support
- Streaming and async operations
- Production-ready deployment tools
- Template library for rapid prototyping