Releases from frontier labs, major companies and research institutes — grouped by model, deduplicated across HuggingFace, OpenRouter and official blogs.
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Zyphra🇺🇸Major lab
Compact open-weights text-to-speech model with about 100M active parameters. It clones voices from an audio sample, lets you design voices by age, accent and vocal texture, and runs in real time on phones, laptops and in the browser.
Zyphra🇺🇸Major lab
GGUF weights for ZONOS2, a text-to-speech model with voice cloning that runs as a native C++ pipeline without Python or PyTorch. Q8_0 is the recommended default, Q4_K the smallest option when VRAM is tight.