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WhisperSpeech

MIT

Whisper, but inverted — TTS by 'unwrapping' OpenAI's ASR

WhisperSpeech, from Collabora, flips OpenAI's Whisper architecture around to generate speech instead of transcribing it. It's trained entirely on properly licensed open data — a deliberately transparent, commercially safe stack — with voice cloning from reference audio.

Hear WhisperSpeech

WhisperSpeech · Default · Same three scripts across the directory.

Run it yourself

Best for: Whisper, but inverted — TTS by 'unwrapping' OpenAI's ASR

Permissive model license: The official repository and published checkpoint collection declare MIT. Pin the selected semantic/acoustic checkpoint pair; check the vocoder and added speaker references separately.

Code: MIT. Weights: MIT (collabora/whisperspeech). License sources checked 2026-09-20. Source 1Source 2Source 3

Before you choose: Compare the samples with your own use case. Check the linked documentation for code, weight, and voice license terms.

Details awaiting a fresh review. Hardware figures are estimates unless a benchmark is linked.

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Voices

1 voice
Neutral
Defaultdefault
—

The scripts

Neutral
“The quick brown fox jumps over the lazy dog near the riverbank.”
Emotional
“I can't believe you actually did it. This is incredible!”
Numbers & Dates
“On March 14th, 2025, the team raised $4.2 million at a 38% margin.”

Run WhisperSpeech

pip install whisperspeech

Sources & setup details

WhisperSpeech FAQ

Do I need a GPU to run WhisperSpeech?

The directory lists roughly 6 GB of VRAM as a historical estimate. Check the model documentation for your checkpoint and runtime.

Can WhisperSpeech clone voices?

Yes — WhisperSpeech supports voice cloning from reference audio.

What license is WhisperSpeech released under?

WhisperSpeech is released under the MIT license. Always check the repository for the exact terms — some models license code and weights separately.

What languages does WhisperSpeech support?

WhisperSpeech supports English, Polish.

Is there a hosted WhisperSpeech API?

OpenSpeech Cloud is accepting production-access interest for WhisperSpeech, but this model is not currently hosted in Cloud. Use the official repository for current deployment options.