Harmonic

Harmonic is leading the development of Mathematical Superintelligence (MSI), having already developed a system that achieves 90% on MiniF2F, the top formal mathematics benchmark. Harmonic was founded by Robinhood CEO Vlad Tenev and Helm.ai co-founder Tudor Achim.

Foundation models and research

Harmonic raised $120M in a Series B+ round announced November 26, 2025, according to finsmes.com. Across 3 sourced rounds it has raised $295M in total. Investors in that round: Ribbit Capital.

Raise history

1. September 29, 2026
   First seen by Recent Funding
   via startups.gallery
2. November 26, 2025
   Series B+ · $120M
   RRibbit Capital (lead)
   Source: finsmes.com (startups.gallery listing)
3. July 10, 2025
   Series B+ · $100M
   KKleiner Perkins (lead)
   Source: businesswire.com (startups.gallery listing)
4. September 23, 2024
   Series A · $75M
   IIndex Ventures (lead)
   Source: finance.yahoo.com (startups.gallery listing)

Investors

• BBlossom Capital
• DDST Global
• GGreatPoint Ventures
• IIndex Ventures
• KKleiner Perkins
• PParadigm
• RRibbit Capital
• SSequoia

Related other companies

• QQuartermaster$140M · Sep 28, 2026
• SSnorkel AI$350M · Sep 23, 2026
• EEnveda$311M · Sep 23, 2026
• HHeidi Health$100M · Sep 22, 2026
• FFirecrawl$75M · Sep 22, 2026
• CCorridor$25M · Sep 21, 2026
• JJack & Jill$40M · Sep 19, 2026
• MMithr Inc.$20M · Sep 19, 2026

Every amount links to the page it came from. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/harmonic.