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AI Voice · first seen 22 October 2026, 16:56 UTC

Gradium open-sources Phonon, a 31M-parameter on-device TTS model

A tiny Apache-2.0 TTS model makes on-device speech synthesis practical.

Phonon is a small text-to-speech model that converts written text into spoken audio, designed to run on-device. Gradium released its 31M-parameter weights under Apache 2.0.

GradiumOpenOpen weightsCode
Name
Phonon
Params
31M
License
Apache 2.0
Domain
creative

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