OpenTTS
github.com
Spec sheet
- Purpose
- OpenTTS unifies access to multiple open-source text-to-speech systems and voices for many languages.Read 12 Oct 2026 · github.com
- Platforms
- web,linux,API,self-hostedRead 20 Sep 2026 · github.com
- Deployment
- The README runs OpenTTS as a Docker container and provides language-specific images, including an all-languages image.Read 12 Oct 2026 · github.com
- Security
- GitHub reports that the project has no security policy file and no published security advisories.Read 12 Oct 2026 · github.com
- Support
- The repository page links to issues for project discussion and tracking.Read 12 Oct 2026 · github.com
- License
- The repository provides the software under the MIT License.Read 12 Oct 2026 · github.com
- API access
- YesRead 20 Sep 2026 · github.com
- Audio cache
- An optional WAV cache can store generated audio in a temporary container directory or a specified mounted directory.Read 12 Oct 2026 · github.com
- Commercial use
- YesRead 20 Sep 2026 · github.com
- Export formats
- WAVRead 20 Sep 2026 · github.com
- HTTP API
- The API provides text-to-WAV, voice-listing, and language-listing endpoints.Read 12 Oct 2026 · github.com
- Integration
- OpenTTS documents a MaryTTS-compatible endpoint that can act as a drop-in replacement for MaryTTS.Read 12 Oct 2026 · github.com
- Linux architectures
- Its build instructions show Docker images for linux/amd64, linux/arm64, and linux/arm/v7.Read 12 Oct 2026 · github.com
- Maintenance
- GitHub says the repository was archived by its owner on October 6, 2025, and is read-only.Read 12 Oct 2026 · github.com
- Speech markup
- It supports a subset of SSML, including voice changes, language settings, pauses, and text substitutions.Read 12 Oct 2026 · github.com
- Voice engines
- The listed systems include Larynx, Glow-Speak, Coqui-TTS, nanoTTS, MaryTTS, flite, Festival, and eSpeak.Read 12 Oct 2026 · github.com
- 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.Read 12 Oct 2026 · github.com
Plans and prices
OpenTTS Free open-source software · self-hosted Docker server Read 12 Oct 2026 · github.com
Where Specifiction places it
- Text-to-speech tools#92 of 2338.1
- Text-to-Speech Software#99 of 2238.1
Alternatives to OpenTTSAll alternatives →
Voicebox From $1/mo · Free plan 9.4 Visit 
Speechify From $10/mo · Free plan 9.4 Visit 
Resemble AI From $280/mo · Free plan 9.4 Visit 
Altered Studio From $30/mo · Free plan 9.3 Visit 
ElevenLabs From $6/mo · Free plan 9.2 Visit