Harmonic
Harmonic builds Aristotle, a formally verified mathematical reasoning AI that eliminates hallucinations by expressing every proof step as checkable Lean4 code, targeting mathematicians, researchers, and high-stakes engineering domains.
Raised $295M across disclosed rounds.[12]
Series C closed November 2025.[12]
Round size, post-money valuation, and the full investor list are not publicly disclosed.
Tudor Achim, Cofounder & CEO[9][14][26]
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Ask for one referenceable production customer.
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Harmonic
Harmonic builds Aristotle, a formally verified mathematical reasoning AI that eliminates hallucinations by expressing every proof step as checkable Lean4 code, targeting mathematicians, researchers, and high-stakes engineering domains.
Ask for one referenceable production customer.
Not a recommendation. The first thing this ledger cannot answer.