Voice Synthesis in 2025
Platforms
(These are just the platforms I examined, not necessarily a comprehensive list of every platform out there)
(Click the logo to visit their website)
Summary
Best sounding results.
Largest library of voices with models for many languages and accents although selection drops off substantially for languages other than English and accents other than American.
Both TTS and STS modes available.
Cost
Subscription starting at $5USD per month for 30,000 credits. I used ~2,500 credits for this project.
Each generation requires a variable number of credits based on factors such as the number of characters or length of recording and chosen model.
Licencing
All paid plans includes a commercial license.
Everything generated during your paid subscription is yours to use commercially forever.
(Click the logo to visit their website)
Summary
Good sounding results.
Small voice library dominated by British accents.
Both TTS and STS modes available.
Cost
Subscription starting at $6USD per month for 25,000 credits. I used ~2,500 credits for this project.
The next tier at $30USD per month includes accent morphing which I didn't try.
Each generation requires a variable number of credits based on factors such as the number of characters or length of recording and chosen model.
Licencing
A commercial licence is only available at the $90USD per month subscription tier.
Everything generated during your paid subscription is yours to use in perpetuity but only under the licence granted by your subscription tier.
(Click the logo to visit their website)
Summary
Very good sounding results.
Small voice library with more of a focus on characters for TV and video games.
Their library also includes multi-lingual support for localization although I didn't try that feature.
Both TTS and STS modes available.
Cost
Subscription starting at $10USD per month for 5,000 credits. I used ~500 credits for this project.
Each generation requires a variable number of credits based on factors such as the number of characters or length of recording and chosen model.
Licencing
All audio generated with the platform includes a world wide royalty-free licence in perpetuity for any use, including commercial.
(Click the logo to visit their website)
Summary
Very good sounding results.
Limited voice library. Apparently also includes localization support which I didn't try.
Both TTS and STS modes available.
Cost
Subscription starting at $5USD per month for 4,000 seconds of content. I used ~500 seconds for this project.
Licencing
All audio generated with the platform includes a commercial licence.
(Click the logo to visit their website)
Summary
OK sounding results.
Limited voice library.
Both TTS and STS modes available.
Cost
A-la-carte pricing starting at $5USD for 20,000 characters of TTS or 5 minutes of STS. I used ~8 minutes of STS for this project.
Licencing
All audio generated with the platform includes a commercial licence.
(Click the logo to visit their website)
Summary
TTS sounds quite good, in the context of TTS.
Limited voice library.
Both TTS and STS modes available.
Cost
Subscription starting at $375USD per year for 3 million characters. I used under 12,500 for this project which is what is available with the free trial.
Licencing
All audio generated with the platform includes a commercial licence.
(Click the logo to visit their website)
Summary
Not good. Don't use it.
TTS only.
The most transparent about ethics and pricing. Likely the best compensation for voice actors.
Cost
Variable depending on the voice model you choose. Common pricing was $0.10USD per word.
Licencing
All paid plans include a commercial licence.
(Click the logo to visit their website)
Summary
Not good. Don't use it.
TTS only.
Cost
Subscription starting at $29USD per month.
Licencing
All paid plans include a commercial licence.
(Click the logo to visit their website)
Summary
Not good. Don't use it.
TTS only.
Cost
Subscription starting at $29USD per month.
Licencing
All paid plans include a commercial licence.
(Click the logo to visit their website)
Summary
Not good. Don't use it.
TTS only.
Cost
Subscription starting at $89USD per month.
Licencing
All paid plans include a commercial licence.