iSpeech vs Volcengine TTS
iSpeech
ispeech.orgVolcengine TTS
volcengine.comSide by side
| Figure | iSpeech | Volcengine TTS |
|---|---|---|
| Price from | $0.25/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Plans published | 15 | 6 |
| Spec score · Text-to-Speech Software | 9.2 (#6) | 6.3 (#222) |
| Spec score · Text-to-speech tools | 9.2 (#11) | 7.1 (#209) |
| API access | API access requires an API key, with mobile development, mobile production, and web/general production key types. | Yes |
| Export formats | aiff,mp3,ogg,wma,flac,wav,alaw,ulaw,vox,mp4 | pcm,wav,mp3,ogg_opus |
| Free plan | Yes | No |
| Headquarters | The company lists Newark, New Jersey as headquarters and San Francisco as an additional office. | Beijing, China |
| Platforms | web,ios,android,api | web,api |
Plans
iSpeech
- Plus$2.95 a month
- Premium$3.95 a month
- Pay Per Use$50 a month
- Pay Per Install$0.25 a month
- BasicFree
- HackerFree
- Plus$2.95 a month
- Premium$3.95 a month
- Junior$29 a month
- Pay-per-use 2,000 credits$50, paid once
Volcengine TTS
- Large-model TTS — 100,000 charactersPrice not published
- Large-model TTS — 1,000,000 charactersPrice not published
- Large-model TTS — 10,000,000 charactersPrice not published
- Voice cloning — 100,000 charactersPrice not published
- Voice cloning — 1,000,000 charactersPrice not published
- Voice cloning — 10,000,000 charactersPrice not published
In their own words
iSpeech
iSpeech provides text-to-speech and automated speech recognition through APIs, SDKs, and online tools. Its speech API can synthesize audio with multiple voices, formats, bitrates, frequencies, and playback speeds, and supports MathML and SSML. The API can also transcribe submitted audio across multiple languages and recognition models; iSpeech says custom models can be created. The homepage lists support for more than 30 languages. Audio downloads are available in AIFF, MP3, OGG, WMA, FLAC, WAV, A-law, μ-law, VOX, and MP4 formats. Listed access includes Android, iOS, Linux, macOS, web, Windows, API, and extension. The Basic plan is free for personal use, and commercial use is listed as available. Plus costs $2.95 a month, billed monthly, and includes 30-minute recordings, approximately 4,167 words. Premium costs $3.95 a month, billed monthly, with 12-hour recordings, approximately 100,000 words. Pay Per Use costs $50 a month for dynamic TTS usage only and includes 2,000 credits. Pay Per Install costs $0.25 a month and has a 10,000-install minimum.
Volcengine TTS
Volcengine TTS has no write-up on Specifiction yet; its figures are above.