OpenTTS
The facts below are what the maker publishes about OpenTTS, checked and dated. Our editors have not written about it yet.
Plans and prices
From OpenTTS's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| OpenTTS | Free | open-source software · self-hosted Docker server |
The facts
Each one read from OpenTTS's own pages, with the date it was checked.
What it does
- API access
- Yeschecked 20 Sep 2026
- Audio cache
- An optional WAV cache can store generated audio in a temporary container directory or a specified mounted directory.checked 12 Oct 2026
- Commercial use
- Yeschecked 20 Sep 2026
- Deployment
- The README runs OpenTTS as a Docker container and provides language-specific images, including an all-languages image.checked 12 Oct 2026
- Export formats
- WAVchecked 20 Sep 2026
- HTTP API
- The API provides text-to-WAV, voice-listing, and language-listing endpoints.checked 12 Oct 2026
- Integration
- OpenTTS documents a MaryTTS-compatible endpoint that can act as a drop-in replacement for MaryTTS.checked 12 Oct 2026
- License
- The repository provides the software under the MIT License.checked 12 Oct 2026
- Maintenance
- GitHub says the repository was archived by its owner on October 6, 2025, and is read-only.checked 12 Oct 2026
- Purpose
- OpenTTS unifies access to multiple open-source text-to-speech systems and voices for many languages.checked 12 Oct 2026
- Security
- GitHub reports that the project has no security policy file and no published security advisories.checked 12 Oct 2026
- Speech markup
- It supports a subset of SSML, including voice changes, language settings, pauses, and text substitutions.checked 12 Oct 2026
- Support
- The repository page links to issues for project discussion and tracking.checked 12 Oct 2026
- Voice engines
- The listed systems include Larynx, Glow-Speak, Coqui-TTS, nanoTTS, MaryTTS, flite, Festival, and eSpeak.checked 12 Oct 2026
- Voice quality
- Larynx and Glow-Speak voices offer high, medium, and low quality settings, and the README notes lower quality may improve Raspberry Pi response times.checked 12 Oct 2026
Where it runs
- Linux architectures
- Its build instructions show Docker images for linux/amd64, linux/arm64, and linux/arm/v7.checked 12 Oct 2026
- Platforms
- web,linux,API,self-hostedchecked 20 Sep 2026
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