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KittenTTS Offers Tiny Local Voice Models for Mac, but Not Murmur

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KittenTTS is an open source text-to-speech library whose lightweight ONNX models run on CPU without a GPU. The nano build, about 15 million parameters and roughly 25 MB on disk, offers eight English voices and adjustable speed. The repository code is Apache-2.0 licensed, while the newer KittenTTS 2 weights fall under a separate community license. The article notes that the Murmur macOS app is unrelated to KittenTTS, since it bundles Kokoro instead. The project's newer 1.7B-parameter KittenTTS 2 adds voice cloning and expression control, which the tiny legacy models lack.

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