Open-source long-form voice AI
VibeVoice synthesises up to 90 minutes of natural, multi-speaker audio in a single pass — powered by a 7.5 Hz continuous speech tokenizer and a next-token diffusion design. Six open checkpoints now cover long-form TTS, real-time speech, long-form and streaming recognition, and CPU-only edge inference.
The model family
Six open checkpoints, one design language. Tap a card for the full detail.
Model comparison
All five VibeVoice models side by side — pick the right one for the job.
How it works
A 7.5 Hz tokenizer plus next-token diffusion: how VibeVoice fits 90 minutes of audio inside a 64K context — and how that design later stretched to streaming and to CPUs.
Specs & numbers
The headline figures behind VibeVoice, plus a full per-model spec table covering all five models.
TTS comparison
VibeVoice next to popular and open-source TTS models. A fair, non-exhaustive sketch — strengths differ by use case.
ASR comparison
VibeVoice-ASR next to FunASR and Whisper — open-source speech-to-text, side by side. Updated for the streaming and CPU builds.
Realtime voice
Low-latency streaming voice — VibeVoice-Realtime next to OpenAI's latest realtime model and CosyVoice 2.
Reviews & reception
What benchmarks and the community say — and how it stacks up against others. A non-official digest of public opinion; tap a card for detail and source.
Where it fits
Long-form, multi-speaker synthesis unlocks workflows that single-utterance TTS struggles with — and the 2026 recognition builds add live and on-device ones.
Development timeline
From the first TTS release to streaming, speaker-attributed recognition — and a build that runs on a CPU.
Limitations & responsible AI
What VibeVoice can't do, what it needs, and how to use it responsibly. Search to jump to a question.
Community builds & safety
People have wrapped VibeVoice into ComfyUI nodes, desktop apps, API servers and native ports. Here is what exists — and what to check before you run any of it. Signals captured September 2026; tap a card for the detail and the repo link.
Resources & links
Official source, weights, a live demo and further reading. Filter by type or search.