# Charles Kantor

> Charles Kantor is a French entrepreneur and investor who co-founded H and served as its founding CEO through June 2025. H announced a $220 million seed round in May 2024 and developed action-oriented AI agents. He subsequently co-founded Blackfuel with Xavier Fischer and Dali Kilani, an inference-focused cloud venture that launched publicly in September 2026.

- **Role:** Co-founder at Blackfuel; co-founder and shareholder at H
- **Organizations:** Blackfuel, H, Stanford University
- **Nationality:** French
- **Education:** Stanford University, Centrale (Paris)
- **Known for:** Co-founded H and led it during its $220 million seed financing and initial product releases., Co-founded Blackfuel, which announced more than $250 million in contracted revenue under multi-year customer agreements at launch.

## Career timeline

- **2023** — Co-founded H towards the end of the year and became its founding CEO.
- **2024-05** — H announced a $220 million seed round.
- **2024-08** — Continued leading H with CTO Laurent Sifre after three co-founders departed.
- **2024-11** — Presented at ai-PULSE; H released Runner H in private beta.
- **2025-06** — H released Runner H, Surfer H and Tester H; Gautier Cloix succeeded Kantor as CEO on June 11. Kantor remained an important shareholder.
- **2026-09** — Blackfuel, co-founded with Xavier Fischer and Dali Kilani, emerged publicly on September 30.

## Achievements

- Co-founded H and led it during its $220 million seed financing and initial product releases.
- Co-founded Blackfuel, which announced more than $250 million in contracted revenue under multi-year customer agreements at launch.

## Latest updates

- **2026-09** — Blackfuel emerged from stealth on September 30, reporting more than $250 million in multi-year contracted revenue. Digital Realty confirmed a planned Barcelona deployment.
- **2025-06** — Gautier Cloix became H CEO on June 11; Kantor remained an important shareholder.

## Links

- Website: https://charlesakantor.com/
- LinkedIn: https://www.linkedin.com/in/charlesakantor/
- Twitter/X: https://x.com/charlesakantor

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Profile page: https://yespress.io/charles-kantor
Published by YesPress — https://yespress.io
Last updated: 2026-10-27