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Microsoft VibeVoice

Free plan APILinuxMacSelf-hosted

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Microsoft VibeVoice's own site

What Microsoft VibeVoice is

Microsoft VibeVoice is a family of MIT-licensed open-source models for text-to-speech and automatic speech recognition. VibeVoice-ASR processes up to 60 minutes of audio in one pass and returns speaker, timestamp, and transcript information. It supports more than 50 languages, handles code-switching without an explicit language setting, and accepts custom hotwords for specialized terms. The streaming model emits transcript text as each audio chunk arrives. The project also describes expressive conversational speech generation lasting up to 90 minutes with as many as four speakers. WAV is the listed export format. VibeVoice is available through API, Linux, macOS, and self-hosted deployments, with a vLLM plugin providing OpenAI-compatible streaming speech-to-text endpoints. Integrations include Hugging Face Transformers and Microsoft Azure AI Foundry Labs. Documentation recommends an NVIDIA Deep Learning Container for CUDA management. The free plan costs nothing. Commercial use is not allowed, and the project recommends research and development use.

Who it suits

It suits developers and researchers working with self-hosted speech recognition or generation. Its language coverage, streaming option, and integrations are useful when commercial deployment is not required.

What it does well

  • Transcribes up to 60 minutes in one pass
  • Supports over 50 languages
  • Handles code-switching automatically
  • Accepts domain-specific hotwords
  • MIT-licensed open-source software

What to know first

  • Commercial use is not allowed
  • Research and development use is recommended
  • Outputs may be biased or inaccurate
  • Quick try for VibeVoice-TTS-1.5B is disabled

Plans

PlanBilled and limitsPrice
MIT-licensed open-source softwareNo hosted plan or usage limits stated; research and development use recommendedFree

As github.com lists them, read 12 Oct 2026. The maker's own page has the final word.

Verdict

VibeVoice offers open models with long-form transcription, streaming recognition, and conversational speech generation. Its noncommercial restriction and stated output risks make deployment suitability an important consideration.

Facts from Microsoft VibeVoice's own pages

API access
No · github.com, 20 Sept 2026
API integration
The vLLM plugin provides OpenAI-compatible speech-to-text API endpoints with streaming support. · github.com, 12 Oct 2026
Commercial use
No · github.com, 20 Sept 2026
Customized recognition
VibeVoice-ASR accepts customized hotwords to guide recognition of domain-specific terms. · github.com, 12 Oct 2026
Deployment
The ASR documentation recommends an NVIDIA Deep Learning Container to manage the CUDA environment. · github.com, 12 Oct 2026
Export formats
WAV · github.com, 20 Sept 2026
Free plan
Yes · github.com, 20 Sept 2026
Intended use
The repository says the models are intended for research and development and recommends against commercial or real-world use without further testing and development. · github.com, 12 Oct 2026
Language support
VibeVoice-ASR supports over 50 languages, does not require an explicit language setting, and handles code-switching. · github.com, 12 Oct 2026
License
The repository software is distributed under the MIT License, which grants permission to use, copy, modify, publish, distribute, sublicense, and sell it subject to the license conditions. · github.com, 12 Oct 2026
Long-form transcription
VibeVoice-ASR processes up to 60 minutes of audio in one pass and produces speaker, timestamp, and transcript information. · github.com, 12 Oct 2026
Maker
Microsoft's official facts page lists its corporate address in Redmond, Washington, and says it was founded in 1975. · news.microsoft.com, 12 Oct 2026
Notable availability limit
The repository lists VibeVoice-TTS-1.5B with its quick try option marked as disabled. · github.com, 12 Oct 2026
Other integrations
The repository says VibeVoice-ASR is available through Hugging Face Transformers and Microsoft Azure AI Foundry Labs. · github.com, 12 Oct 2026
Platforms
linux,macos,self_hosted · github.com, 20 Sept 2026
Product
VibeVoice is a family of open-source voice AI models for text-to-speech and automatic speech recognition. · github.com, 12 Oct 2026
Risks
Microsoft warns that outputs may be unexpected, biased, or inaccurate and that synthetic speech could be misused for impersonation, fraud, or disinformation. · github.com, 12 Oct 2026
Security reporting
The security policy says not to report vulnerabilities through public GitHub issues and directs reporters to Microsoft repository security guidance. · github.com, 12 Oct 2026
Speech generation
The project page describes expressive long-form conversational speech generation of up to 90 minutes with up to four speakers. · microsoft.github.io, 12 Oct 2026
Streaming transcription
VibeVoice-ASR-Streaming emits transcript text as audio arrives, once per audio chunk. · github.com, 12 Oct 2026
Voice cloning
No · github.com, 20 Sept 2026

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