VibeVoice

VibeVoice is an open-source voice AI framework from Microsoft covering both text-to-speech and automatic speech recognition. VibeVoice-TTS generates synthetic speech up to 90 minutes long with up to 4 distinct, consistent speakers across a multi-speaker dialogue; VibeVoice-ASR transcribes up to 60 minutes of continuous audio in one pass, identifying who said what and when across 50+ languages with support for custom hotwords; VibeVoice-Streaming is a lightweight 0.5B-parameter model for real-time streaming TTS at roughly 300ms latency. It's built on continuous speech tokenizers running at 7.5 Hz combined with LLMs and diffusion-based generation. Released under the MIT license, with model weights on Hugging Face and interactive playgrounds for testing ASR and streaming.