Side by side
eSpeak NG vs iSpeech
Both stand on text-to-speech software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Open source AndroidAPIiPhone+4
eSpeak NG combines broad language coverage, small data, adjustable voices, and several integration interfaces in a free GPL project. Consider its less smooth formant speech and partial SSML support when evaluating output quality.
Visit eSpeak NG Free plan Open source AndroidAPIExtension+5
iSpeech combines speech generation, transcription, APIs, SDKs, and downloadable audio formats. Its plan details distinguish personal use, recording allowances, and dynamic TTS usage, so buyers should match the option to their intended use.
Visit iSpeechThe facts
| eSpeak NG | iSpeech | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Yes | Yes |
| Runs on | Android, API, iPhone, Linux, Mac, Self-hosted, Windows | Android, API, Extension, iPhone, Linux, Mac, Web, Windows |
| Lowest paid plan | Free or on request | Pay Per Install: $0.25 a month |
| Plans published | 1 | 13 |
| Maker | eSpeak NG | Not published |
| Website | github.com | ispeech.org |
| On text-to-speech software | #1 of 217 | #2 of 217 |
eSpeak NG: what it does well
- Supports over 100 languages and accents
- WAV output
- Command-line and shared-library interfaces
- Commercial use permitted
- Adjustable voices
What to know first
- Speech is less natural than recorded voices
- SSML support is incomplete
- Some eSpeak files are incompatible
- CMake required for current compilation
iSpeech: what it does well
- Supports both text-to-speech and speech recognition.
- Homepage lists more than 30 languages.
- Audio downloads include ten listed formats.
- Commercial use and API access are available.
- Developer tools list SDKs for multiple languages.
What to know first
- Plus is limited to 30-minute recordings.
- Pay Per Use covers dynamic TTS usage only.
- Static use, caching, or audio downloads require contacting iSpeech.
Alternatives to eSpeak NG Alternatives to iSpeech The whole list