ABAB Pedia

Yoko Li

Yoko Li is a partner at the venture capital firm Andreessen HorowitzAndreessen HorowitzAndreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. It invests from the seed stage through the growth stage and provides operational support to its portfolio companies.Open the full entry focusing on developer tools, infrastructure, AI and creative tools; an engineer by background, she is also known for cartoons that explain technical concepts.

Contents6 sections
Key facts

Publishing the TetrisBench Experiment

On February 23, 2026, she published an article on the Andreessen Horowitz website about TetrisBench, a project she built in which large language models compete at Tetris; by her account, the idea came while playing Tetris 99 on a Nintendo Switch and wanting to play against a system that reasons differently from a human.⁠[1]

As of October 2026: Partner at Andreessen Horowitz

The Andreessen Horowitz website describes her as a partner at the firm focusing on developer tools, infrastructure, AI and creative tools; she sits on the boards of Resend and Relace and is a board observer at Mintlify, Clerk, Phota Labs and Inngest.⁠[2]

Her GitHub bio describes her as a cartoonist, engineer, product manager and investor who works at a16z during the day and draws cartoons and writes code at night, with San Francisco listed as her location.⁠[3]

Career Background

According to the Andreessen Horowitz website, before joining the firm she worked as an engineer at AppDynamics, as a founding engineer and product manager at Transposit, and as head of product for Terraform Cloud at HashiCorp.⁠[2]

Open-Source Projects and Cartoons

Open-source projects she has built include AI Town, AI-tamago, companion-app and local-ai-stack. AI Town is a deployable starter kit for a virtual town where AI characters live and socialize, inspired by the paper “Generative Agents: Interactive Simulacra of Human Behavior” and released under the MIT license.⁠[2][4]

She posts cartoons on X that explain, and poke fun at, technical concepts.⁠[2]

Related Organizations, Websites, and Public Accounts

Andreessen Horowitz: Official website: https://a16z.com/ (opens in a new window)⁠[2]

Personal website: Public link: https://yoko.dev/ (opens in a new window)⁠[3]

Sources

  1. I Built TetrisBench, Where LLMs Compete at Playing Tetris. Here’s What I Found. (opens in a new window)
  2. Yoko Li (opens in a new window)
  3. ykhli (Yoko Li) (opens in a new window)
  4. a16z-infra/ai-town (opens in a new window)