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LangChain

Open Source

LangChain: Observe, Evaluate, and Deploy Reliable AI Agents

Overview

LangChain provides the engineering platform and open source frameworks developers use to build, test, and deploy reliable AI agents.

Focus Area

Developer Open-Source Framework for LLM Application Development

Core Features & Capabilities

•Simplifies chaining together LLM components, vector stores, and external APIs.

•Provides LangGraph for building complex stateful multi-agent workflows.

•Features LangSmith for debugging, testing, and monitoring production LLM apps.

Best For

Software Developers

Integrations

GitHubMakeCanvaYouTube

Architecture & Security

•Open-source Python and TypeScript SDKs connected to cloud observability platforms (LangSmith).

Pricing Details

•Framework is 100% Free open-source; LangSmith cloud offers free and enterprise plans.

PricingFrom $39/mo

ComplexityAdvanced

DeploymentSelf-hosted

Time to ValueFew minutes

API AvailableYes

Free TrialNo

Open SourceYes

Build Secure AI Applications | Promptfoo