About LangChain
Open-source application frameworks plus hosted tools for building, testing, and operating LLM applications.
How you access it
Run locally or self-host it. Open source, Developer platform
Capabilities
- Agents
- Tool use
- Evaluation
- Observability
Published pricing
Open source with hosted service plans
Review note
Directory reviewed on 2026-07-28. Review the provider privacy policy before sending sensitive information.