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SPECIFICTION
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Acapela Group vs OpenTTS

Acapela Group

acapela-group.com

OpenTTS

github.com

Side by side

FigureAcapela GroupOpenTTS
Price from€8.25/moFree
Free plan—Yes
Free trialYes—
Open source——
WebYesYes
WindowsYes—
macOSYes—
LinuxYesYes
iOSYes—
AndroidYes—
APIYesYes
Self-hostedYesYes
Plans published91
Spec score · Text-to-Speech Software9.3 (#2)8.1 (#99)
Spec score · Text-to-speech tools9.2 (#9)8.1 (#92)
API accessYesYes
Commercial useYesYes
DeploymentCustomer interaction products are available through cloud, sovereign cloud, on-premises, and embedded deployments.The README runs OpenTTS as a Docker container and provides language-specific images, including an all-languages image.
Platformsweb,windows,macos,linux,ios,android,apiweb,linux,API,self-hosted
SupportAcapela says its team advises customers on voice selection and project requirements, and asks them to provide project, application, operating system, and language details.The repository page links to issues for project discussion and tracking.

Plans

Acapela Group

  • Yearly subscription€99 a year
  • One-time license€999 a month
  • Acapela Android voice€3.99, paid once
  • Acapela TTS voices for Google Play€3.99, paid once
  • My-Own-Voice yearly subscription€99 a year
  • My-Own-Voice one-time licence€999, paid once
  • Virtual Speaker€1,500, paid once
  • Virtual Speaker first prepaid package€1,500, paid once
  • Acapela TTS voices for NVDA€5,999, paid once

Acapela Group pricing →

OpenTTS

  • OpenTTSFree

OpenTTS pricing →

In their own words

Acapela Group

Acapela Group creates synthetic voices that turn written content into speech for services, apps, and devices. Its portfolio includes more than 250 voices in over 30 languages, with voice cloning, API access, and commercial use supported. Customer interaction products can be deployed through cloud, sovereign cloud, on-premises, or embedded setups. Acapela Cloud provides a web interface for creating and editing AI voice prompts and organizing files by project. Developers can use the Windows Server toolkit with proprietary APIs, SAPI5,.NET, C/C++, Java, MRCP v2, and W3C SSML. Rule-based pronunciation and lexicon tools allow specific terms to be tuned across languages. Acapela identifies voice agents and interactive voice response systems as use cases, and its NVDA voices serve blind and vision-impaired computer users. Platforms include Android, API, iOS, Linux, macOS, self-hosted, web, and Windows. The yearly subscription is €99 a year, billed excluding VAT; a three-month voice evaluation is included. Acapela is based in Mons, Belgium.

Visit acapela-group.com

OpenTTS

OpenTTS has no write-up on Specifiction yet; its figures are above.

Visit github.com