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Yohei Nakajima

Yohei Nakajima

VC by Day, Builder by Night

yohei
Seattle, Washington
Bellevue, Washington, United States
Joined January 2025
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Network

94.5K connections
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Summary

Yohei Nakajima is a venture capitalist and innovator known for his "build-in-public" methodology, actively developing projects with the latest technologies to foster learning, connect with founders, and contribute to the ecosystem. This approach has led to creations like BabyAGI and PixelBeasts, showcasing his dual expertise in investment and hands-on building across AI, Web3, and No Code. yoheinakajima+3
He is a pioneer in the AI agent space, most notably as the creator of BabyAGI, an open-source autonomous agent with task planning capability developed in Python. This project achieved widespread recognition, garnered significant GitHub stars, received extensive media coverage, and resulted in his participation as a TED AI speaker, solidifying his influence in the AI community. yoheinakajima+4
As a General Partner at Untapped Capital, Yohei Nakajima co-founded the firm with Jessica Jackley, where he focuses on early-stage investments. The firm distinguishes itself by leveraging AI and automation in its operations, and Yohei himself is recognized as a thought leader in data-driven venture capital, frequently speaking on the application of AI in VC. yoheinakajima+1
Yohei Nakajima has extensive experience in supporting and investing in early-stage startups for over 15 years. His career includes significant roles at Techstars, where he helped establish the Disney Accelerator and served as Director of Pipeline, and at Scrum Ventures, where he was a Venture Partner and SVP of Scrum Studio, overseeing corporate innovation programs with major global companies like Nintendo. yoheinakajima+2

Work

Education

Projects

Writing

Building a personalized VC Copilot

March 31, 2025

A blog post about creating a personalized VC Copilot, likely using AI to assist in venture capital operations.

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Pippin, an AI powered unicorn

December 6, 2024

A blog post about "Pippin", an AI-powered unicorn project.

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Birth of BabyAGI

April 1, 2023

A blog post detailing the creation and release of the BabyAGI project.

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Task-driven Autonomous Agent Utilizing GPT-4, Pinecone, and LangChain for Diverse Applications

March 28, 2023

A blog post discussing the technical implementation and applications of BabyAGI using GPT-4, Pinecone, and LangChain.

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My Build-in-Public Log

December 2, 2022

A blog post detailing Yohei Nakajima's experiences and insights on his "build-in-public" approach to development and investing.

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How to find Angel Investors using LinkedIn

January 21, 2020

A practical guide on leveraging LinkedIn to identify and connect with angel investors.

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Democratizing Access to Venture Capital

An article on Medium reflecting on his background as an Asian male in venture capital and discussing ways to democratize access to the industry.

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Hobbies

Yohei Nakajima enjoys dancing. yoheinakajima

Notes

ACArnaud Collerysaid
YNYohei Nakajima
is one of the most impressive solo GPs in venture capital they've worked with.

Feb 13, 2026

ACArnaud Collerysaid
YNYohei Nakajima
is one of the most insightful robotics investors they know.

Feb 13, 2026

SJSharan Jhangianisaid that if they were raising a fund,
YNYohei Nakajima
would be among the first people they’d approach for a significant investment.

Feb 5, 2026

SYSeref Yararsaid
YNYohei Nakajima
is one of the most committed supporters they've seen for open, public AI benchmarks or open-source research.

Jan 23, 2026

JDJeremy Diamondsaid
YNYohei Nakajima
is one of the most thoughtful consumer-focused investors they know.

Jan 21, 2026

SMSanchit Mongasaid they've seen
YNYohei Nakajima
make a meaningful difference for their portfolio companies as a VC.

Dec 30, 2025

CLCody Lestellesaid that if they were founding a startup,
YNYohei Nakajima
would be among their top choices as a VC to work with.

Dec 27, 2025

CLCody Lestellesaid
YNYohei Nakajima
has led innovation or thought leadership in AI-powered video marketing that stood out to them.

Dec 20, 2025

ALAndry Lebedevsaid
YNYohei Nakajima
is a go-to person for testing and giving high-quality feedback on tools that involve launching multiple agents per ticket with live previews.

Nov 13, 2025

EWErick Watsonsaid
YNYohei Nakajima
is one of the most insightful investors they've worked with at the pre-seed or seed stage for software startups.

Oct 17, 2025

AKAndreas Klingersaid that if a friend was raising a pre-seed or seed round,
YNYohei Nakajima
would be among the first investors they'd think to introduce them to.

Jul 11, 2025