Harmonic

Harmonic

Private
Palo Alto, CaliforniaAI, Data & Cloud Infrastructurehttps://www.harmonic.fun

Last Round

Series C

Nov 25, 2025

Est. Valuation

$1.45B

Total Funding Raised

$295M

Company Overview

Harmonic (Educational Software) is a technology company that develops a mathematical reasoning engine utilizing artificial intelligence to deliver verifiably correct outputs, facilitating advancements in verified software synthesis for safety-critical applications and aiding in the resolution of complex problems in mathematics and science.

Sector

AI, Data & Cloud Infrastructure

Verticals

ML Platforms, Synthetic Data

Business Model

B2B

Customer Profile

Usage-Based SaaS, Freemium, Government Contracts, Subscription SaaS

AI Layer

Foundation

Keywords

mathematical superintelligenceMSIverifiable AIhallucination-free AImathematical reasoning AIAI reasoning engineAI foundation modelsafety-critical AIfrontier AI labAI safetyneuro-symbolic AIformal verificationsynthetic dataexplainable AIXAIgeometric solver

Historical Pricing

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Harmonic Comps

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CompanyStatusEst. ValuationRev Multiple
OpenAIPrivate$86.0B~40x
CoherePrivate$5.0B--
Competitor 1Public$XX.XBXXx
Competitor 2Public$XX.XBXXx

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Harmonic Funding Rounds

Historical fundraising activity

RoundDateAmount RaisedValuationInvestorsSources
Series CNov 25, 2025
Series BJul 10, 2025
Series ASep 23, 2024

Key People

Founding team and executive leadership

Tudor Achim

Cofounder CEO

Founding Team

Harmonic Investors

Notable investors and investment history

InvestorRounds
GreatPoint VenturesSeries A
Era FundsSeries A, Series C
Blossom CapitalSeries A
GreatPoint VenturesSeries A
ParadigmSeries B, Series C
ElefundSeries A
Sequoia CapitalSeries B, Series C, Series A

Market signals

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  • Mar 18, 2026

    Launched Aristotle Agent, an 'autonomous mathematician', with Robinhood CEO endorsement.

  • Jan 1, 2025

    Mathematical reasoning engine achieved Gold Medal-level performance in the 2025 IMO.

Harmonic Filings

SEC and related filings with document metadata.

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Harmonic Filings

SEC and related filings with document metadata.

Frequently Asked Questions

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Firmographic Details

HeadquartersPalo Alto, California
Employee Range38
Year Founded2023
Last FundingNov 25, 2025

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