# Paul Sinaï (slim)

> Paul Sinaï is co-founder of Blaxel. Blaxel Sandboxes on Anchor Terminal, with grades, an about and public profiles.

- Full: https://www.anchorterminal.com/people/paul-sinai/index.md (~950 tokens) · this version ~680 tokens · JSON https://www.anchorterminal.com/people/paul-sinai/index.json · canonical https://www.anchorterminal.com/people/paul-sinai/
- 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)

Co-founder, Blaxel.

Paul Sinaï is co-founder and CEO of Blaxel, which builds cloud infrastructure for AI agents and went through Y Combinator's Spring 2025 batch.

- LinkedIn: https://www.linkedin.com/in/paul-sinai

## What Paul builds

- [Blaxel Sandboxes](https://www.anchorterminal.com/tools/blaxel-sandboxes.md), graded C, 60.9/100, in Code execution sandboxes. Sandbox VMs that drop to standby seconds after the last connection and resume in about 25 ms with memory and filesystem kept, charging only for snapshot storage while idle. Co-founder, Blaxel, researched 2026-10-26.

## Works with

- [Charles Drappier](https://www.anchorterminal.com/people/charles-drappier/), Co-founder, Blaxel
- [Christophe Ploujoux](https://www.anchorterminal.com/people/christophe-ploujoux/), Co-founder, Blaxel
- [Mathis Joffre](https://www.anchorterminal.com/people/mathis-joffre/), Co-founder, Blaxel
- [Nicolas Lecomte](https://www.anchorterminal.com/people/nicolas-lecomte/), Co-founder, Blaxel

## Backed by

- [Y Combinator](https://www.anchorterminal.com/investors/y-combinator/)
- [First Round Capital](https://www.anchorterminal.com/investors/first-round-capital/)
- [Liquid 2 Ventures](https://www.anchorterminal.com/investors/liquid-2-ventures/)
- [Multimodal](https://www.anchorterminal.com/investors/multimodal/)
- [Transpose Capital](https://www.anchorterminal.com/investors/transpose-capital/)

## Questions

### Who is Paul Sinaï?

Paul Sinaï is co-founder and CEO of Blaxel, which builds cloud infrastructure for AI agents and went through Y Combinator's Spring 2025 batch.

### What does Blaxel make?

Anchor Terminal lists Blaxel Sandboxes from Blaxel.

### Who has invested in Blaxel?

The sources our research read name Y Combinator, First Round Capital, Liquid 2 Ventures, Multimodal and Transpose Capital.

### How are Paul's tools graded?

Blaxel Sandboxes is graded C, 60.9 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.

## Sources

- https://www.ycombinator.com/companies/blaxel
- https://blaxel.ai/
- https://blaxel.ai/contact
- https://blaxel.ai/company/about

These are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched.