# Harmonic

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/harmonic

- Industry: Software
- Headquarters: Palo Alto, US
- Website: www.harmonic.fun
- Total disclosed funding: $295M
- Latest round: Series C (Nov 25, 2025)
- Investors on record: 11

## About

Established in 2023 and based in California, US, Harmonic is an artificial intelligence company that provides a mathematical reasoning engine and develops mathematical superintelligence for applications in education and software synthesis. Tudor Achim (CEO) and Vlad Tenev are the co-founders of the company. In November 2025, Harmonic raised USD 120 million in series C funding led by Ribbit Capital, with participation from Sequoia Capital, Index Ventures, Kleiner Perkins, Nventures, and Emerson Collective also participated in the round. The series C funding values Harmonic at USD 1.45 billion post-money. The company’s product offerings are centered around AI solutions that target industries requiring data analysis and decision-making tools. The firm’s solutions integrate mathematical principles with technology that provides businesses with tools that optimize processes, improve decision-making, and enable the automation of complex tasks.

## Funding rounds

- Series C, Nov 25, 2025, $120M — Index Ventures, Kleiner Perkins, Hong Shan, Ribbit Capital, Emerson Collective, NVentures
- Series B, Jul 10, 2025, $100M — Index Ventures, Kleiner Perkins, Hong Shan, Ribbit Capital, Paradigm
- Series A, Sep 23, 2024, $75M — Index Ventures, Hong Shan, DST Global, GreatPoint Ventures, Elefund, Blossom

## Investors

- Index Ventures (https://capitalatlas.ai/funds/index-ventures) — Series A, Series B, Series C
- Hong Shan — Series A, Series B, Series C
- DST Global (https://capitalatlas.ai/funds/dst-global) — Series A
- GreatPoint Ventures (https://capitalatlas.ai/funds/greatpoint-ventures) — Series A
- Elefund (https://capitalatlas.ai/funds/elefund) — Series A
- Blossom (https://capitalatlas.ai/funds/blossom) — Series A
- Kleiner Perkins (https://capitalatlas.ai/funds/kleiner-perkins) — Series B, Series C
- Ribbit Capital (https://capitalatlas.ai/funds/ribbit-capital) — Series B, Series C
- Paradigm (https://capitalatlas.ai/funds/paradigm) — Series B
- Emerson Collective — Series C
- NVentures — Series C