# Pioneer Square Labs

> Pioneer Square Labs's investments in AI tools on Anchor Terminal, Read AI, Inc., with each listing's grade and the founders behind it.

- Canonical: https://www.anchorterminal.com/investors/pioneer-square-labs/
- Markdown: https://www.anchorterminal.com/investors/pioneer-square-labs/index.md (~500 tokens)
- Slim: https://www.anchorterminal.com/investors/pioneer-square-labs/index.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/investors/pioneer-square-labs/index.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key)
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)
- Updated: 2026-10-28

Venture firm.

Website: https://www.psl.com

## Companies on Anchor Terminal

- **Read AI, Inc.**, Seed, September 2021, through PSL Ventures
  - [Read AI](https://www.anchorterminal.com/tools/read-ai.md), graded D, 50.5/100
  - Source: https://techcrunch.com/2021/09/29/read-ai-raises-10m-creates-virtual-meeting-dashboard-to-show-you-when-you-talk-too-much/

## Where they invest

- Meeting capture & meeting infrastructure, 1

## Founders they backed

- [David Shim](https://www.anchorterminal.com/people/david-shim/), Read AI, Inc.
- [Robert Williams](https://www.anchorterminal.com/people/robert-williams/), Read AI, Inc.
- [Elliott Waldron](https://www.anchorterminal.com/people/elliott-waldron/), Read AI, Inc.

## Questions

### Which AI tools has Pioneer Square Labs invested in?

Anchor Terminal lists Read AI, Inc. backed by Pioneer Square Labs.

### How are Pioneer Square Labs's companies graded?

On Anchor Terminal's benchmark, Read AI (D, 50.5).

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. An investor isn't a sign of quality, and nobody can pay to be listed or to change a grade. To correct something or have a page removed, write to privacy@anchorterminal.com.

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