AI Tool Index

Home › AI Agents & Frameworks › LangChain

LangChain

Open-source framework and company for building LLM-powered applications and agents.

Category
AI Agents & Frameworks
Pricing model
Freemium Free tier plus paid plans. Source: https://www.langchain.com/pricing
Official site
https://www.langchain.com/
Link checked
2026-11-01. Added 2026-11-01.

Visit LangChain →

This entry gives the product's category, the pricing model as shown on the vendor's own pages when we could confirm it, and a link to the official site. It is not a review or an endorsement. Plans and prices change, so confirm on the vendor's site. Alternatives to LangChain. Compare: LangChain vs LlamaIndex. Is this your product? Get a "Listed on AI Tool Index" badge.

Other AI Agents & Frameworks tools

ToolWhat it doesPricingLink
LangChain4jOpen-source Java library for building LLM-powered applications and agents.FreeOfficial site
LangGraphFramework for building stateful, controllable multi-step agents.See siteOfficial site
LangroidPython framework for building multi-agent LLM applications.FreeOfficial site
LettaPlatform for building stateful agents with long-term memory.FreemiumOfficial site
LightRAGOpen-source simple and fast retrieval-augmented generation.FreeOfficial site
Living BrainInteroperable memory layer for agentic AI, with a no-code workspace.See siteOfficial site
LlamaIndexFramework and cloud services for building agents over your own data.FreemiumOfficial site
LyzrEnterprise platform and framework for building and running AI agents.FreemiumOfficial site

All AI Agents & Frameworks tools · Best AI tools for building AI agents