eSpeak NG vs iSpeech
eSpeak NG
github.comiSpeech
ispeech.orgSide by side
| Figure | eSpeak NG | iSpeech |
|---|---|---|
| Price from | Free | $0.25/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | Yes | Yes |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 2 | 15 |
| Spec score · Text-to-Speech Software | 8.9 (#16) | 9.2 (#6) |
| Spec score · Text-to-speech tools | 8.7 (#37) | 9.2 (#11) |
| API access | Yes | API access requires an API key, with mobile development, mobile production, and web/general production key types. |
| Commercial use | Yes | Yes |
| Export formats | WAV | aiff,mp3,ogg,wma,flac,wav,alaw,ulaw,vox,mp4 |
| Free plan | Yes | Yes |
| Markup support | SSML and HTML input are supported, although the SSML implementation is incomplete. | The API accepts both Speech Synthesis Markup Language and MathML for text-to-speech requests. |
| Platforms | The project lists Linux, BSD, Android 4.0+, Windows 8+, and Mac as supported platforms. | web,ios,android,api |
| What it does | eSpeak NG is a compact text-to-speech synthesizer supporting more than 100 languages and accents. | iSpeech provides cloud text-to-speech and automated speech-recognition services that turn text into audio or submitted audio into transcriptions. |
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
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.