MOSS-TTS
MOSS-TTS: A strong fit for long-form cloned speech when API or self-hosted deployment works. Ranked #70 of 222 in Text-to-Speech Software by our editors (3.0/10); pricing: Open source; best for long-form open-source cloned speech.
At a glance
- Editor score3.0 / 10
- PricingOpen source
- Best forLong-form open-source cloned speech
- Paid fromFree
- Commercial useYes
- Facts checked20 Sep 2026
Where it wins
- Zero-shot voice cloning from reference audio
- Speech generation across 31 languages with code-switching
- Up to one hour of speech with detailed pacing controls
Where it doesn't
- Platform support centers on API and self-hosted deployment
- WAV is the listed audio output format
- Open-source deployment may require technical model setup
Our verdict on MOSS-TTS
MOSS-TTS is an open-source text-to-speech model family for multilingual synthesis, voice cloning, long-form narration, dialogue, and real-time applications. It is aimed at developers and teams that want to generate cloned speech through an API or self-hosted deployment, with downloadable model weights and Python generation interfaces. The flagship model supports zero-shot cloning from reference audio and commercial use under the Apache License 2.0, subject to its terms.
Its strongest area is control over long-form and multilingual speech. MOSS-TTS can generate up to one hour of speech in a single run and supports 31 languages, including code-switched speech generation. Token-level duration and pacing controls provide fine-grained timing adjustment, while Pinyin, IPA, and explicit inline pause markers support pronunciation and delivery control. These capabilities make it a practical match for narration and speech workflows where timing and pronunciation matter more than a broad range of export formats.
The deployment model is focused rather than platform-wide. MOSS-TTS provides API access, self-hosting, a Torch-free llama.cpp inference backend, and WAV audio output. That combination suits teams that want local inference or control over their speech stack, but it is less suitable for buyers seeking a wide selection of ready-made platform integrations or multiple listed audio formats. Choose MOSS-TTS for open-source, long-form voice cloning with detailed control; consider an alternative if hosted product breadth and broader platform coverage are higher priorities.
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MOSS-TTS pricing
MOSS-TTS fact sheet
| Free plan | Not verified |
|---|---|
| Paid from | Free |
| Commercial use | Yes |
| Voice cloning | Yes |
| API access | Yes |
| Languages | Not verified |
| Maximum input | Not verified |
| Export formats | WAV |
| Platforms | api, self_hosted |
| Deployment | Self-hosted |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Open source |
| Website | github.com |
| Facts checked | 20 Sep 2026 |
Alternatives to MOSS-TTS
- ElevenLabsAffordable voice cloning with multilingual generation, dubbing, streaming, and API access.9.4
- Google Cloud Text-to-SpeechA broad, API-only TTS service for developers building voice-enabled products.9.3
- Azure AI SpeechA broad, production-ready TTS platform for teams building voice applications.9.2
See all MOSS-TTS alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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