LangChain Review 2026

AI Infrastructure & Agents·AI Agent Platforms & Frameworks·freemiumFree tier

Powering the Agent Development Lifecycle

What is LangChain?

LangChain provides open-source frameworks (langchain, langgraph, deepagents) and LangSmith, an agent engineering platform to observe, evaluate and deploy AI agents. It powers the full agent development lifecycle.

Best for

Mixed

Use cases

Building AI agents
Agent observability and evaluation

Key features

Agent frameworks (langchain, langgraph)

LangSmith observability

Evaluation and deployment

Fleet enterprise agents

Pricing

Model

freemium

Price range

Open-source frameworks free; LangSmith paid plans

Free tier

Yes

Integrations

LangChain integrates with 6 tools including:

PythonTypeScriptGoJavaMCPA2A

Companies hiring for LangChain experience

View all 84 →

Solutions Architect (Dallas)
Dallas, TXRemoteCustomer Engineering$170K – 190K
Solutions Architect (Austin)
Austin, TXRemoteCustomer Engineering$170K – 190K
Solutions Architect (Remote)
Los Angeles, CA | Salt Lake City, UT | Seattle, WA | Denver, CORemoteCustomer Engineering$170K – 190K
Solutions Architect (San Francisco)
San Francisco, CACustomer Engineering$170K – 190K
Manager, Commercial Account Management
San Francisco, CACustomer Engineering
AI Engineer, Enablement (London)
LondonCustomer Engineering
AI Engineer, Enablement (Amsterdam)
AmsterdamCustomer Engineering
Commercial Account Manager
San Francisco, CACustomer Engineering
Enterprise Account Executive (Colorado)
Denver, CORemoteSales
AI Engineer, Enablement
San Francisco, CA | Seattle, WARemoteCustomer Engineering$116K – 195K