# Jack Altman (slim)

> Jack Altman's investments in AI tools on Anchor Terminal, Chroma, Courier, PlanetScale and WorkOS, with each listing's grade and the founders behind it.

- Full: https://www.anchorterminal.com/investors/jack-altman/index.md (~700 tokens) · this version ~580 tokens · JSON https://www.anchorterminal.com/investors/jack-altman/index.json · canonical https://www.anchorterminal.com/investors/jack-altman/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-28
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Angel investor.

## Companies on Anchor Terminal

- **Chroma**, Seed, April 2023
  - [Chroma API + MCP](https://www.anchorterminal.com/tools/chroma.md), graded E, 45.3/100
  - Source: https://www.trychroma.com/blog/seed
- **Courier**, Series A, September 2020
  - [Courier](https://www.anchorterminal.com/tools/courier.md), graded BB, 70.6/100
  - Source: https://www.courier.com/blog/announcing-our-series-a
- **PlanetScale**, Series C, November 2021
  - [PlanetScale MCP Server](https://www.anchorterminal.com/tools/planetscale-mcp.md), graded B, 66.6/100
  - Source: https://techcrunch.com/2021/11/16/planetscale-raises-50m-series-c-as-its-enterprise-database-service-hits-general-availability/
- **WorkOS**, Series B, June 2022
  - [WorkOS Pipes and Agents](https://www.anchorterminal.com/tools/workos-pipes.md), graded C, 59.9/100
  - Source: https://workos.com/blog/series-b

## Where they invest

- Retrieval & vector search, 1
- Notifications, 1
- Databases & files, 1
- Agent auth & delegated access, 1

## Founders they backed

- [Jeff Huber](https://www.anchorterminal.com/people/jeff-huber/), Chroma
- [Anton Troynikov](https://www.anchorterminal.com/people/anton-troynikov/), Chroma
- [Troy Goode](https://www.anchorterminal.com/people/troy-goode/), Courier
- [Michael Grinich](https://www.anchorterminal.com/people/michael-grinich/), WorkOS

## Questions

### Which AI tools has Jack Altman invested in?

Anchor Terminal lists Chroma, Courier, PlanetScale and WorkOS backed by Jack Altman.

### How are Jack Altman's companies graded?

On Anchor Terminal's benchmark, Chroma API + MCP (E, 45.3), Courier (BB, 70.6), PlanetScale MCP Server (B, 66.6) and WorkOS Pipes and Agents (C, 59.9).

Investors are named from the companies' own announcements, the investors' own pages, Y Combinator's company pages, public filings and news reports of a round, each with its source.