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Gradium open-sources Phonon on-device TTS models

By PulseAugur Editorial · [1 sources] ·

Gradium has released Phonon, a family of on-device text-to-speech models available in 31M and 40M parameter sizes. The English-only Phonon 31m model, licensed under Apache 2.0, is a compact 64.5 MB and can generate speech locally on various devices including CPUs, phones, and browsers without requiring a GPU. Gradium claims Phonon achieves competitive performance, with the 31m model reporting a 1.70% Word Error Rate on challenging text sets and generating initial audio in milliseconds on CPUs. AI

IMPACT Enables local, low-latency speech generation on a wide range of devices, reducing reliance on cloud services.

RANK_REASON The cluster describes the open-sourcing of a new text-to-speech model family by a company. [lever_c_demoted from research: ic=1 ai=1.0]

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AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Gradium open-sources Phonon on-device TTS models

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The cluster describes the open-sourcing of a new text-to-speech model family by a company. [lever_c_demoted from research: ic=1 ai=1.0]
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COVERAGE [1]

  1. MarkTechPost TIER_1 English(EN) · Asif Razzaq ·

    Gradium Open-Sources Phonon, a 31M-Parameter On-Device TTS Model Under Apache 2.0

    <p>Gradium has open-sourced Phonon, a family of on-device text-to-speech models. The English Phonon 31m ships under Apache 2.0, fits in 64.5 MB, and starts speaking in about 7 ms on a laptop CPU.</p> <p>The post <a href="https://www.marktechpost.com/2026/10/22/gradium-phonon-31m-…

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