Gradium
Builds ultra-low-latency voice AI models for developers
$100MSeed
Role not disclosedXN
Xavier Niel
Activity from announced rounds
Activity in this selectionOct 24, 2026 · Developer tools · Jan 1, 2026
Xavier Niel is the individual investor named in financing announcements from Arlequin AI, Gradium and AMI Labs.
Recorded funding activity
Arlequin develops data-analysis tools for governments and enterprises. Gradium develops low-latency voice models. These are personal investments recorded in RoundOS; Upstream’s separately reported financing is attributed to Kima Ventures.
- Rounds participated in
- 1
- Confirmed lead rounds
- — 1 roles undisclosed
- New companies
- 1 First participation on record · 0 follow-on
- Funding in participating rounds
- $100M 1 disclosed · full round size, not this investor’s share