Open-source TTS generating up to 90 minutes of speech with up to 4 speakers
VibeVoice (Microsoft) is listed under AI Voice & Speech, in the Content & Media Generation category on Flocci AI Tools. Open-source TTS generating up to 90 minutes of speech with up to 4 speakers. It is free, with no paid plan attached, and it lives at github.com.
VibeVoice (Microsoft) is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 399 entries on Flocci AI Tools with no upgrade path built in.
VibeVoice (Microsoft) does 4 things the catalog singles out: Open-source tts generating up to 90 minutes of speech with up to 4 speakers; vibevoice-asr transcribes 60-minute audio in one pass with speaker, timestamps and text; asr covers 50+ languages; free to self-host from github and hugging face.
Chatterbox (Resemble AI) is the closest free alternative: it sits in the same AI Voice & Speech sub-category and is free. Copilot Audio Expressions, CosyVoice and F5-TTS also start free. The full list is on the alternatives page.
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