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SPECIFICTION
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iSpeech vs OpenVox

iSpeech

ispeech.org

OpenVox

openvoxai.com

Side by side

FigureiSpeechOpenVox
Price from$0.25/moFree
Free planYesYes
Free trialYes—
Open sourceYes—
WebYes—
WindowsYesYes
macOSYesYes
LinuxYes—
iOSYesYes
AndroidYesYes
APIYesYes
Plans published152
Spec score · Text-to-Speech Software9.2 (#6)8.6 (#44)
Spec score · Text-to-speech tools9.2 (#11)8.6 (#53)
API accessAPI access requires an API key, with mobile development, mobile production, and web/general production key types.Yes
Commercial useYesCommercial use is included with both Free and Pro in the pricing comparison.
Export formatsaiff,mp3,ogg,wma,flac,wav,alaw,ulaw,vox,mp4WAV,MP3,M4A
Free planYesYes
Platformsweb,ios,android,apimacOS,Windows,iPadOS,local API
ProductiSpeech provides text-to-speech and automated speech recognition services through APIs, SDKs, and online tools.OpenVox provides local AI text-to-speech, transcription, dubbing, and voice conversion.
SupportThe developer pricing page lists priority technical support with purchases; the API guide directs support requests to [email protected].Support documentation links to Reddit and Discord communities and a bug report form.

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

iSpeech pricing →

OpenVox

  • OpenVox FreeFree
  • OpenVox Pro$19.99, paid once

OpenVox pricing →

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.

Visit ispeech.org

OpenVox

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

Visit openvoxai.com