Cartesia's Multilingual Voices tops Speech Arena; Mamba author Albert Gu on board

alex_verem · x · 2026-09-18

Cartesia launched Multilingual Voices, focused on preserving a single voice identity across languages — supporting 10-second voice cloning, instant vs professional clone fidelity, and one-recording multilingual localization with native accents. It claims the #1 spot on Artificial Analysis's Speech Arena in every language. Observers noted Mamba architecture co-author Albert Gu works there and asked how much of the win comes from architecture vs training.

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