---
title: "Yohei Nakajima"
category: "people"
role: "Managing Partner"
company: "Untapped Capital"
linkedin: "https://www.linkedin.com/in/yoheinakajima"
twitter: "https://x.com/yoheinakajima"
website: "https://yoheinakajima.com"
blog: "https://yohei.me"
sourceLabels: ["Official speaker roster", "Official conference schedule"]
---
# Yohei Nakajima

## Profile
Managing Partner at [[untapped-capital|Untapped Capital]].

- [LinkedIn](https://www.linkedin.com/in/yoheinakajima)
- [X / Twitter](https://x.com/yoheinakajima)
- [Website](https://yoheinakajima.com)
- [Blog](https://yohei.me)

## Biography
Yohei Nakajima is a General Partner and co-founder of [[untapped-capital|Untapped Capital]], a pre-seed venture fund backing unexpected founders at the earliest stages. He is best known as the creator of BabyAGI, one of the early open-source autonomous agent experiments that helped popularize task-driven AI agents. Yohei’s work sits at the intersection of venture capital, software prototyping, and frontier AI research: he builds tools and experiments to understand where technology is going, then uses those lessons to support founders and shape investment theses.

Most recently, Yohei has been developing ActiveGraph, an event-log-native architecture for building agents that are replayable, inspectable, forkable, and capable of continuous improvement. Across investing, writing, demos, and open-source projects, his approach is simple: build to learn, share what works, and help more people understand what AI-native systems make possible.

## Conference Sessions
- [[2026-07-01-yohei-nakajima-active-graph-agent-runtime-babyagi-4]] — Active Graph Agent Runtime (BabyAGI 4) (2026-07-01, 11:10am-11:30am)

## Evidence Graph
This evidence graph summarizes how this person appears across the conference source graph: scheduled sessions, linked videos, transcripts, and slide-derived evidence.

### Linked Sessions
- [[2026-07-01-yohei-nakajima-active-graph-agent-runtime-babyagi-4|Active Graph Agent Runtime (BabyAGI 4)]]

### Media Signals
No linked video, transcript, or slide source has been attached yet.