The default framework for LLM apps

Product passport

Key facts are transcribed from official pages or public documentation. Access and pricing can change, so confirm them before acting.

Category: AI Agents
Maturityi: Available
Deploymenti: Not specified
Purchase access: Public purchase / signup
Official source: Official website
Verifiedi: Not yet verified

Reality check

The useful boundary is what works repeatedly in a real environment—not what looks impressive in a demo.

Works well when

Knowledge lookup, drafting and multi-step workflows with review
Tasks with clear tools, permissions and success criteria
Teams that can evaluate outputs with real examples

Verify before buying

Prompt/version history, traces, evaluations and cost
Data retention, model providers and tool permissions
Human approval for irreversible or sensitive actions

Not a magic solution

An unsupervised decision-maker for high-stakes work
A replacement for an unclear business process
A guarantee that a larger model removes all errors

About

LangChain is the de facto standard framework for developing LLM applications, offering modular components and chaining capabilities with integration to various models and external tools. Key features include prompt management, memory, and agent orchestration, widely used for chatbots, document Q&A, and automated workflows.