Soprano 1.1
Apache-2.0Compact English speech model for low-latency inference
Evaluate economical English narration on CPU or GPU. No voice cloning. Uncommon words can need pronunciation adjustments. Published speed claims are hardware-specific and have not been reproduced here.
Hear Soprano 1.1
Standardized samples are pending for this release. See the official sources below for the author’s demo.
Soprano 1.1 · Samples pending · Same three scripts across the directory.
Best for: Evaluate economical English narration on CPU or GPU.
Permissive model license: No voice cloning. Uncommon words can need pronunciation adjustments. Published speed claims are hardware-specific and have not been reproduced here.
Code: Apache-2.0. Weights: Apache-2.0. License sources checked 2026-09-20. Source 1Source 2
Before you choose: No voice cloning. Uncommon words can need pronunciation adjustments. Published speed claims are hardware-specific and have not been reproduced here.
No OpenSpeech hardware benchmark yet; follow the checkpoint documentation.
Details reviewed 2026-09-20. Hardware figures are estimates unless a benchmark is linked.
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Compare all →Choose an alternative to hear both models together.
No samples yet
Every model in this directory is read against the same three scripts so voices can be compared honestly — Soprano 1.1’s samples just haven’t been generated yet.
Contribute samples on GitHub →Run Soprano 1.1
pip install soprano-ttsSources & setup details
Soprano 1.1 FAQ
Do I need a GPU to run Soprano 1.1?
Soprano 1.1 supports CPU inference. Speed depends on your processor, runtime, and text.
Can Soprano 1.1 clone voices?
No — Soprano 1.1 uses preset voices. Browse the voice-cloning category for models that clone from reference audio.
What license is Soprano 1.1 released under?
Soprano 1.1 is released under the Apache-2.0 license. Always check the repository for the exact terms — some models license code and weights separately.
What languages does Soprano 1.1 support?
Soprano 1.1 supports English.
Is there a hosted Soprano 1.1 API?
OpenSpeech Cloud is accepting production-access interest for Soprano 1.1, but this model is not currently hosted in Cloud. Use the official repository for current deployment options.