Phonon on-device speech model released and open-sourced
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The Phonon team has released Phonon, an on-device text-to-speech model, on Hugging Face. There are two versions of approximately 65 MB and 75 MB, supporting English, French, German, Spanish, and Portuguese, with over 100 built-in voices. Licensing differs by version: the 31m version uses Apache 2.0 and can be used free of charge in commercial products; the other models are CC BY-NC, free for non-commercial projects only, with commercial use billed by number of users rather than amount of generated speech. The 40m version covers all five languages under a non-commercial license. The team says the model can run on users' own devices.
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- Hugging Face BlogFeaturedA Closer Look at Phonon TTS. Launching High-Quality On-Device Speech That Tops the Benchmarks.
Gradium details Phonon, a small on-device text-to-speech model released two weeks ago that needs no server or network, with Phonon 31m (English) under Apache 2.0 and Phonon 40m covering English, French, German, Spanish and Portuguese under a non-commercial license. The models, about 65 MB and 75 MB, offer over 100 built-in voices plus voice cloning and voice design, and on Hugging Face's Open TTS Leaderboard Phonon ranks first in German and Spanish on intelligibility and tops the CPU streaming benchmark on time-to-first audio. The post also covers the ptts inference framework, Transformers integration from v5.21, launch demos, and more than 200,000 downloads in the first two weeks.
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