Acapela Group vs IBM Watson Text to Speech
Acapela Group
acapela-group.com
IBM Watson Text to Speech
ibm.comSide by side
| Figure | Acapela Group | IBM Watson Text to Speech |
|---|---|---|
| Price from | €8.25/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 9 | 7 |
| Spec score · Text-to-Speech Software | 9.3 (#2) | 8.4 (#63) |
| Spec score · AI voice generators | 9.3 (#1) | 8.3 (#14) |
| Spec score · Text-to-speech tools | 9.2 (#9) | 8.6 (#43) |
| API access | Yes | Yes |
| Deployment | Customer interaction products are available through cloud, sovereign cloud, on-premises, and embedded deployments. | IBM says the service can be deployed on public, private, hybrid, multicloud, or on-premises infrastructure. |
| Free plan | No | Yes |
| Platforms | web,windows,macos,linux,ios,android,api | api,self_hosted |
| Use cases | The company identifies voice agents and interactive voice response systems as customer interaction use cases. | IBM lists customer self-service, call analytics, and agent assist as use cases. |
| Voice cloning | Yes | Yes |
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
IBM Watson Text to Speech
- LitePriced on request
- StandardPriced on request
- PremiumPriced on request
- LiteFree
- StandardPriced on request
- Deploy AnywherePriced on request
- PremiumPriced on request
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.
IBM Watson Text to Speech
IBM Watson Text to Speech is an API cloud service that converts written text into audio in multiple languages and voices, for applications or watsonx Assistant. Deep neural networks trained on human speech produce its neural voices. SSML controls can change pronunciation, volume, pitch, speed, and other attributes; unusual pronunciations can be specified with IPA or IBM SPR. Listed speaking styles include GoodNews, Apology, and Uncertainty, and voice transformation can adjust strength, pitch, breathiness, rate, and timbre. The service supports nine languages and accepts up to 5,000 input units. Export formats include A-law, Basic audio, FLAC, Linear 16-bit PCM, MP3, Mu-law, Ogg, WebM, and WAV. Deployment options include public, private, hybrid, multicloud, and on-premises infrastructure. Deploy Anywhere is billed by contacting IBM. Premium can include a custom branded neural voice modeled on a chosen speaker using as little as one hour of recordings.