Fundraising Fox
Harrison Chase
InvestorUnicorn founderCo-founder at LangChain · Machine Learning Engineer at Kensho
San Francisco, CA
FoundedLangChain$1.3B
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You →Anders · together at LangChain (2025–2026) →Harrison
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About
Harrison Chase open-sourced LangChain in October 2022 — an 800-line Python package that caught the ChatGPT wave to become the default way developers wire language models into applications — and built the company behind it to a $1.25 billion valuation in its October 2025 Series B led by IVP. A Harvard statistics-and-CS graduate who wrote quantitative sports analysis as a student, he led entity-linking at Kensho and the ML team at Robust Intelligence, where he met co-founder Ankush Gola. LangSmith and LangGraph turned the library into the orchestration stack for production agents, and Chase's 'context engineering' framing has become industry vocabulary.
Beyond investing
- Founded
- Released LangChain as an ~800-line open-source package on October 24, 2022, and incorporated the company in January 2023 with Ankush Gola.
- Communities
- Wrote quantitative sports pieces — NBA player progression, NFL coaching analysis — for the Harvard Sports Analysis Collective as a student.
- Awards
- Forbes 30 Under 30, Enterprise Technology (2024).
- More
- Met co-founder Ankush Gola when both worked at Robust Intelligence. LangChain's GitHub stars ran from 5k to 96k+ in under two years, with 28M monthly downloads by the end of 2024. Popularized 'context engineering' — the framing that when agents fail, it's usually the context, not the model.
Mentioned above: the Robust Intelligence mafia →
From published sources — common ground for a warm intro.
Co-founder at LangChain
Intro paths
In turn, Harrison can intro founders to LangChain's investors below.
LangChain's investors · 17
Co-founders at LangChain
Machine Learning Engineer at Kensho
Intro paths
In turn, Harrison can intro founders to Kensho's investors below.
Kensho's investors · 9
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Co-founders at Kensho
Experience
- LangChainCo-Founder and CEOcurrent2023 — presentSan Francisco Bay Area
- Robust IntelligenceMachine Learning Engineer2019 — 2023
- Kensho TechnologiesMachine Learning Engineer2017 — 2019
Skills & more
From Harrison's professional profile.
Investments
Per curated public sources.
Podcasts & interviews
featuring Harrison ChaseEverything Gets Rebuilt: The New AI Agent Stack
The MAD Podcast
Building the Orchestration Layer for AI Agents
Sequoia Training Data · sequoiacap.com
The Point of LangChain
Latent Space · latent.space
Frequently asked questions
- Who is Harrison Chase?
- Harrison Chase open-sourced LangChain in October 2022 — an 800-line Python package that caught the ChatGPT wave to become the default way developers wire language models into applications — and built the company behind it to a $1.25 billion valuation in its October 2025 Series B led by IVP. A Harvard statistics-and-CS graduate who wrote quantitative sports analysis as a student, he led entity-linking at Kensho and the ML team at Robust Intelligence, where he met co-founder Ankush Gola. LangSmith and LangGraph turned the library into the orchestration stack for production agents, and Chase's 'context engineering' framing has become industry vocabulary.
- Where does Harrison Chase work?
- Harrison Chase is Co-founder of LangChain and Machine Learning Engineer at Kensho.
- What companies did Harrison Chase found?
- Harrison Chase founded LangChain.
- What companies has Harrison Chase invested in?
- Investments tracked here include Exa, Paradigm.
- Where did Harrison Chase go to school?
- Harrison Chase studied at Harvard University.
- What awards has Harrison Chase received?
- Forbes 30 Under 30, Enterprise Technology (2024).
- What podcasts and interviews feature Harrison Chase?
- Tracked appearances include "Everything Gets Rebuilt: The New AI Agent Stack", "Building the Orchestration Layer for AI Agents", "The Point of LangChain".
Founder mafias
Kensho mafia9
Also came through, then founded or led a company.
Robust Intelligence mafia6
Also came through, then founded or led a company.
Same school
Also attended Harvard University2,000
+ 1,994 more
Shared employers
Also worked at LangChain9
+ 3 more
Also worked at Robust Intelligence9
+ 3 more
Also worked at Kensho Technologies13
+ 7 more