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LangChain

Featured

The framework for AI applications

Developer & API Tools
8.8 (80 score)
free
API Available

Overview

LangChain is the leading open-source framework for building LLM-powered applications. Connect models to data, build agents, create chains, and deploy AI apps with the largest developer community.

Pros
  • Massive community
  • Open source
  • Flexible framework
  • Many integrations
Cons
  • Complex API
  • Frequent breaking changes
  • Over-engineered for simple tasks

Key Features

LLM chaining
Agent building
RAG applications
Memory management
Tool use

Best For

AI developers
ML engineers
Startups building AI apps
Pricing Plans

Free

Custom
  • Access to LangChain open-source framework
  • Community support via GitHub and Discord
  • Basic documentation and tutorials
  • Limited to self-hosted deployments

Pro
Most Popular

$39/monthly
  • LangSmith platform access for debugging and monitoring
  • Up to 100,000 traced runs per month
  • Collaborative workspaces for teams
  • Advanced analytics and performance insights

Business

$149/monthly
  • Up to 1,000,000 traced runs per month
  • Advanced security and compliance features
  • Custom integrations and API access
  • Priority support with SLA

Enterprise

Custom
  • Unlimited traced runs and custom usage
  • On-premises deployment options
  • Custom security and compliance requirements
  • 24/7 dedicated support
Verified Info
Added to directory4/21/2026
Pricing modelfree

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