# Vipul Ved Prakash

> Vipul Ved Prakash is the San Francisco based co-founder and CEO of Together AI. An engineer and serial founder, he created the open source spam filter Vipul's Razor, co-founded Cloudmark and Topsy, worked at Apple after its 2013 Topsy acquisition, and launched Together AI in 2022 to make open AI models and compute more accessible.

- **Role:** Co-founder and CEO at Together AI
- **Organizations:** Together AI, Apple, Topsy Labs, Cloudmark, Sense/Net
- **From:** New Delhi, India
- **Nationality:** Indian
- **Education:** Undergraduate studies in mathematics, physics and computer science; did not complete degree, St. Stephen's College, Delhi
- **Known for:** Created Vipul's Razor, an open source collaborative spam filtering system., Recognized in MIT Technology Review's 2003 TR100 for anti-spam innovation., Co-founded Cloudmark, Topsy Labs and Together AI.

## Career timeline

- **1997** — Left Delhi University to pursue software design and coding.
- **Early 2000s** — Created the open source collaborative spam filter Vipul's Razor and co-founded Cloudmark.
- **2003** — Named among MIT Technology Review's TR100 young innovators for anti-spam work.
- **2007** — Co-founded Topsy Labs, a social search and analytics company.
- **2013** — Apple acquired Topsy; Prakash subsequently worked at Apple.
- **2022** — Co-founded Together AI with Chris Ré, Percy Liang and Ce Zhang.
- **2023** — Announced Together AI's $20 million seed round.
- **2025** — Together AI announced a $305 million Series B.
- **2026** — Announced an $800 million Series C and more than 500 MW in compute capacity commitments.

## Achievements

- Created Vipul's Razor, an open source collaborative spam filtering system.
- Recognized in MIT Technology Review's 2003 TR100 for anti-spam innovation.
- Co-founded Cloudmark, Topsy Labs and Together AI.
- Wrote the 2024 TIME essay 'The Long Road to Genuine AI Mastery.'
- Led Together AI through its announced $800 million Series C in July 2026.

## Latest updates

- **2026-07** — Together AI announced an $800 million Series C and commitments for more than 500 MW of compute capacity.
- **2026-07** — Together AI and Y Combinator announced a dedicated GPU cluster for YC companies.
- **2026-04** — Spoke with Mozilla president Mark Surman about open and closed models at HumanX.

## Links

- Website: https://www.together.ai/
- LinkedIn: https://www.linkedin.com/in/vipulved/
- Twitter/X: https://x.com/vipulved

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Profile page: https://yespress.io/vipul-ved-prakash
Published by YesPress — https://yespress.io
Last updated: 2026-09-29