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Harmonic

AI · US

Develops the Mathematical Superintelligence Aristotle, a formal-logic AI without hallucinations, co-founded by Vlad Tenev.

Founders

Vlad Tenev (Bulgaria · ♂) — A Stanford-trained mathematician and Robinhood co-founder, he became fascinated with using AI to solve a Millennium Prize problem and co-founded Harmonic to build mathematical superintelligence.
Tudor Achim (United States · ♂) — After co-founding self-driving AI company Helm.ai, he teamed with Vlad Tenev to build Harmonic's hallucination-free, formally verified mathematical reasoning engine.

Shares the most investors with (number = shared investors):

Date	Round	Amount
Nov 2025	Funding round Harmonic, co-founded by Robinhood CEO Vlad Tenev, raised $120M led by Ribbit Capital at a $1.45B valuation for its verified-reasoning AI.	$120M

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Data is community-curated and may be incomplete.