Harmonic — Startup Profile

AI research focused on mathematical superintelligence

HQ: San Francisco, CA | Founded: 2023 | Employees: Not publicly disclosed | Stage: Venture-backed | Website: https://www.harmonic.fun

About

Harmonic is an AI research company focused on mathematical reasoning and systems intended to produce more reliable, verifiable outputs.

The Take

Harmonic is pursuing a differentiated benchmark and product thesis around mathematical truth rather than general conversational fluency. Its research focus may create a valuable capability layer, but the company must demonstrate that mathematical advances transfer to commercially useful workloads.

Key Metrics

• Founded: 2023
• Founders: Vlad Tenev; Tudor Achim
• Latest signal: Harmonic raises $120M at a reported $1.45B valuation
• Products: 3

Funding Rounds

• Round: $120M (2025-11) — Not fully disclosed
• Round: $100M (2025-07) — Kleiner Perkins

Key People

• Vlad Tenev
• Tudor Achim

Key Competitors

• Incumbent platforms —
• Specialist startups —

Timeline Highlights

• 2025-07: Series B
• 2025-11: Series C
• 2023: Founded

Recent News

• Harmonic raises $120M at a reported $1.45B valuation (2025-11-25)

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