# John Collison (slim)

> John Collison's investments in AI tools on Anchor Terminal, AssemblyAI, AssemblyAI, Inc., Nylas and Nylas, Inc., with each listing's grade and the founders behind it.

- Full: https://www.anchorterminal.com/investors/john-collison/index.md (~750 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/investors/john-collison/index.json · canonical https://www.anchorterminal.com/investors/john-collison/
- 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

- **AssemblyAI**, Series A, March 2022
  - [AssemblyAI Speech-to-Text (Universal)](https://www.anchorterminal.com/tools/assemblyai-stt.md), graded B, 66.9/100
  - Source: https://www.assemblyai.com/blog/series-a-announcement
- **AssemblyAI, Inc.**, Series A, March 2022
  - [AssemblyAI Voice Agent API](https://www.anchorterminal.com/tools/assemblyai-voice-agent.md), graded B, 64.6/100
  - Source: https://www.assemblyai.com/blog/series-a-announcement
- **Nylas**, Series C, June 2021
  - [Nylas Calendar and Scheduler API](https://www.anchorterminal.com/tools/nylas-calendar.md), graded BB, 71.1/100
  - [Nylas Email API](https://www.anchorterminal.com/tools/nylas-email.md), graded A, 79.1/100
  - Source: https://techcrunch.com/2021/06/17/nylas-maker-of-apis-to-integrate-email-and-other-productivity-tools-raises-120m-passes-40k-developers/
- **Nylas, Inc.**, Series C, June 2021
  - [Nylas Notetaker API](https://www.anchorterminal.com/tools/nylas-notetaker.md), graded BB, 71.8/100
  - Source: https://techcrunch.com/2021/06/17/nylas-maker-of-apis-to-integrate-email-and-other-productivity-tools-raises-120m-passes-40k-developers/

## Where they invest

- Speech-to-text, 1
- Conversational voice agents, 1
- Calendars & scheduling, 1
- Mailbox access, 1
- Meeting capture & meeting infrastructure, 1

## Founders they backed

- [Dylan Fox](https://www.anchorterminal.com/people/dylan-fox/), AssemblyAI, AssemblyAI, Inc.
- [Christine Spang](https://www.anchorterminal.com/people/christine-spang/), Nylas, Nylas, Inc.

## Questions

### Which AI tools has John Collison invested in?

Anchor Terminal lists AssemblyAI, AssemblyAI, Inc., Nylas and Nylas, Inc.

### How are John Collison's companies graded?

On Anchor Terminal's benchmark, AssemblyAI Speech-to-Text (Universal) (B, 66.9), AssemblyAI Voice Agent API (B, 64.6), Nylas Calendar and Scheduler API (BB, 71.1), Nylas Email API (A, 79.1) and Nylas Notetaker API (BB, 71.8).

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.