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LangChain

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Build context-aware AI applications

San Francisco, United States Founded 2022
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NeuronScore 50/100
Total Raised $35M
Valuation $200M
Stage Seed
Team 50-100 since 2022
About LangChain

LangChain is the most popular open-source framework for building applications powered by large language models. With over 90,000 GitHub stars, LangChain provides abstractions for chains, agents, memory, and retrieval that dramatically accelerate LLM application development. LangGraph enables stateful multi-agent workflows, while LangSmith provides observability and evaluation — forming the complete stack for production AI applications.

NeuronScore Signal quality across funding, news, traction & verification
50 /100
Tracked
Funding momentum
17/30
Active deals
0/10
News
4/12
Traffic
3/8
Verified
19/20
Freshness
0/10
Agent-Ready Score 60/100 · checked May 2, 2026
MCP
Public API
Webhooks
OAuth2
SDK · TS
SDK · Py
SDKs: PythonTypeScriptGoJava
Alternatives 6 similar All →
FAQ
When was LangChain founded?
LangChain was founded in 2022 in San Francisco, United States.
How much funding has LangChain raised?
LangChain has raised $35M across 1 rounds — most recently a Seed.
What is LangChain's valuation?
Most recent disclosed valuation is $200M.
How much does LangChain cost?
LangChain pricing: Freemium · From $39/mo.
Where is LangChain headquartered?
LangChain is headquartered in San Francisco, United States.
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