# Harmonic funding rounds and investors

As of 14 Oct 2026, Harmonic has raised $220M across 2 verified rounds on record; latest: $120 million Series C led by Ribbit Capital, announced 25 Nov 2025.

An advanced reasoning engine and API for developers, mathematicians, researchers, and the general public.

Website: https://www.harmonic.fun  
Page: https://fireround.dev/companies/harmonic.fun

## Verified rounds

| Announced | Round | Amount | Lead investors | Other investors | Sources |
| --- | --- | --- | --- | --- | --- |
| 2025-11-25 | Series C | $120 million | Ribbit Capital | Sequoia Capital, Index Ventures, Kleiner Perkins, Emerson Collective | [siliconangle.com](https://siliconangle.com/2025/11/25/harmonic-ai-raises-120m-1-45b-valuation-advance-mathematical-reasoning) |
| 2025-07-09 | Series B | $100M | Kleiner Perkins | Paradigm, Ribbit Capital, Sequoia Capital, Index Ventures, Charlie Cheever | [harmonic.fun](https://www.harmonic.fun/news/series-b) |

Source: Fireround (https://fireround.dev), an open-source funding feed. Each round is checked against the pages listed with it.