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COLD START / catalog / c/gradiumretrieved 2026-05-16T01:38 UTC · 24 sources read

Gradium

Gradium sells real-time voice APIs — TTS, STT, smart turn-taking, and instant voice cloning — built on audio language models, targeting developers and enterprises shipping production voice systems and AI agents.

gradium.ai · Paris

CALL NO.CS·GRADIUM·26
StageSeedDecember 2025 · led by FirstMark Capital[2][3][4][5][6]
Raised$70Mdisclosed rounds[2][3][4][6]
Headcount14as of Apr 2026[1]
Valuationnot publicly disclosedno source in ledger
Founded2025[3][5]
Money

Raised $70M across disclosed rounds.[2][3][4][6]

Seed closed December 2025, led by FirstMark Capital.[2][3][4][5][6]

post-money valuation is not publicly disclosed.

Named investors include FirstMark Capital, Eurazeo, DST Global Partners, Korelya Capital, Amplify Partners, Liquid 2 Ventures, Drysdale Ventures, Eric Schmidt, Xavier Niel, Yann LeCun, Rodolphe Saadé, Olivier Pomel, Ilkka Paananen, Thomas Wolf, Guillermo Rauch, Mehdi Ghissassi.[4][9]

People

Neil Zeghidour, CEO & Co-founder[3][5][9]

Olivier Teboul, CTO & Co-founder[3][5][9]

Laurent Mazaré, Co-founder[3][5][9]

Alexandre Défossez, Co-founder & Chief Science Officer[3][5][9]

Constance Grisoni, Chief Growth Officer[1][15]

Thomas Trinelle, Chief Product Officer[1][15]

Neil Zeghidour, CEO[1][15]

Signals
Apr 27 2026newsGradium company claim, not independently confirmed[1]
Dec 9 2025fundingVoice AI Startup Gradium Comes Out of Stealth With a USD 70M Seed Round - Slator[12]
Dec 2 2025launch[PDF] Gradium Launches to Redefine Voice AI company claim, not independently confirmed[11]
Dec 2 2025fundingParis-based AI voice startup Gradium nabs $70M seed - TechCrunch[2][8]
Comps

Noiz AI · noiz.ai · similar, not yet paired · Similar web and market context from Exa find-similar[14]

Risk

The customer proof is company-sourced only. No independent source in this ledger confirms it.[1]

Next question

Ask for one referenceable production customer.

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Sourcestracings · 24

May 2026 · gradium.ai

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Gradium

CALL NO.CS·GRADIUM·26

Gradium sells real-time voice APIs — TTS, STT, smart turn-taking, and instant voice cloning — built on audio language models, targeting developers and enterprises shipping production voice systems and AI agents.

gradium.ai · Paris

StageSeed
Raised$70M
Headcount14
Valuationnot publicly disclosed
Founded2025
CompsNoiz AI (similar, not yet paired)

Ask for one referenceable production customer.

Not a recommendation. The first thing this ledger cannot answer.