Gradium 🇫🇷
Advanced voice AI including text-to-speech, speech-to-text, real-time translation, and voice cloning for modern apps.
About Gradium
Gradium offers advanced voice AI technologies, including text-to-speech, speech-to-text, real-time voice translation, and voice cloning, designed for integration into modern applications and AI agents. The platform utilizes scalable voice APIs and incorporates cutting-edge research to support developers in creating production-ready voice systems.
Gradium is a France-based company founded in 2025, now around 21 people. It has raised $100M in disclosed funding. FundFinder classes it as AI & ML.
Founder: Olivier Teboul (CTO and co-founder; repeat founder; previously Brother Tongue, CentraleSupélec; CentraleSupélec).
Its investors also appear on FundFinder's most-active lists for Seed · B2B (120 funds), Seed · Fintech (111 funds), Seed · Generalist (110 funds).
Company facts from Harmonic and public filings; team backgrounds from public profiles. Refreshed weekly.
Seed · Jul 2026
Eurazeo- Eurazeo — Pan-European VC fund investing from seed to Series B, sector-agnostic. · cheques £1.5M – £15M