Developer Tools
LangChain
The most widely adopted open-source framework for building applications on top of large language models, providing orchestration, memory and tool-calling infrastructure used across the agentic AI ecosystem. LangChain raised $125 million in October 2025 at a $1.25 billion valuation, following a $100 million Series B led by IVP in July 2025 at a $1.1 billion valuation, a $25 million Series A led by Sequoia Capital in February 2024 at a $200 million valuation, and a $10 million seed led by Benchmark in April 2023, bringing total funding to $260 million.
Additional Intelligence Signals
Patent citation lineage, earnings-call mentions, and federal contract disclosures — automatically collected, not yet visible anywhere else on the site.
Earnings-call mentions
Mentioned by MongoDB
“MongoDB and LangChain formalized a strategic partnership to transform MongoDB Atlas into the premier unified backend for production-ready AI agents.”
SEC 8-K exhibit (0001628280-26-038798) · May 28, 2026
Sources
Every claim traced to a primary source — evidence, recent activity, and insider filing behavior, all in one place.
Evidence
1 source · 48% avg. source confidence
- PitchBook / Sacra — LangChain raises $125M at $1.25B valuation48% source confidence
Dependency Map
What LangChain depends on below, and who depends on LangChain above — click any node to make it the new center, 5 levels deep.
Connection type
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The Story So Far
Auto-generated from this entity's dated milestones, relationship updates, and sourced evidence — not AI-written, just sorted.
LangChain's Timeline
A sourced, dated history of LangChain's key moments — founding to present.
Feb 2024 · $25M Series A at $200M valuation
LangChain raised a $25 million Series A led by Sequoia Capital at a $200 million valuation.
Jul 2025 · $100M Series B at $1.1B valuation
LangChain raised a $100 million Series B led by IVP at a $1.1 billion valuation.
Oct 2025 · Raises $125M at $1.25B valuation
LangChain raised $125 million at a $1.25 billion valuation, bringing total funding to $260 million from investors including Sequoia Capital, Benchmark and IVP.