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Show HN: Phonon TTS on WebGPU, 44MB, 115x real time, with live word timings

By blixt 0 views 0 comments

I tried Gradium's Phonon 31M text-to-speech model and was blown away by its quality to size ratio. I needed timings for every word to be able to highlight them, so I wrote a second runtime for it with a different design: the whole generation loop stays on the GPU in WebGPU kernels written specifically for this by Claude Opus 5.5.When initialized, it can start streaming audio in about 3 ms, and it only needs to download 44 MB (

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