EEburyraised$700M·Growth|SStarcloudraised$200M·Growth|FFunraised$72M·Series A|SStandard Intelligenceraised$75M·Series A|NNetomiraised$110M·Series C|PParallel Web Systemsraised$100M·Series B|RRogoraised$160M·Series D|HHightouchraised$150M·Series D|TTrue Anomalyraised$650M·Series D|SSaronicraised$1.75B·Series D|AAvocaraised$125M·Series B|SSiFiveraised$400M·Series G|SSidewinder Therapeuticsraised$137M·Series B|HHermeusraised$350M·Series C|WWHOOPraised$575M·Series G|
LangChainLC
LC

LangChain

Framework for building LLM-powered applications

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AISeries AEst. 202250–100 employeesSan Francisco

LangChain is the most widely used framework for building applications with large language models. It provides composable components for chains, agents, memory, and tool use — along with LangSmith for observability and LangGraph for stateful agentic workflows. Downloaded over 100 million times and used by developers worldwide.

Total Raised$35M
SequoiaBenchmark

Founders

H
Harrison Chase
View Open Roles at LangChain

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