Robinhood Chief’s Startup Harmonic AI Hits $900 Million Valuation After $100 Million Raise
Harmonic AI confirmed a $100 million Series B round led by Index Ventures with participation from Sequoia Capital and Tiger Global, vaulting the Palo Alto start-up’s valuation to roughly $900 million—triple its price tag at last year’s seed. The deal gives Robinhood boss Vlad Tenev his second unicorn-in-waiting and sent HOOD shares up 2 % on spillover enthusiasm.
The company’s flagship model, Aristotle, tackles one of generative AI’s nagging weaknesses: hard math. Harmonic says Aristotle can solve university-level calculus proofs and balance-sheet reconciliations with single-digit error rates, a leap from the guess-prone outputs of mainstream LLMs. The fresh capital will fund GPU clusters and a public beta later this year, while enterprise pilots with Stripe and Goldman Sachs are already under way.
Analysts call the raise “proof that vertical AI is heating up” as investors hunt domain-specific models rather than general chatbots. By focusing on numeric reasoning, Harmonic joins a small cadre of specialists—like Cohere’s Aya for code and BloombergGPT for finance—vying for slices of an AI market IDC now pegs at $500 billion by 2027. With cash in hand and Tenev’s profile, Harmonic could be the next spin-out to test IPO waters once volatility cools.
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