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OpenSubs vs Voxelle

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

OpenSubs compared with Voxelle
DetailOpenSubs logo OpenSubsVoxelle logo Voxelle
What it doesFree AI subtitle generator that runs entirely in your browser AI text to speech, with feeling.
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelNot given Freemium
PricingFree: transcription, translation on-device, all 12 subtitle styles, word-by-word highlighting, trimming, burning into video, and all export formats. Credits: $5 for 1,000 credits for cloud translation (approximately 1 credit per 30 subtitle lines). Free: 1,500 credits per day after check-in. Starter: $5/month includes 110,000 credits per month plus 1,500 extra daily credits and commercial use. Pro: $18/month includes 500,000 credits per month plus 1,500 extra daily credits and commercial use. Studio: $60/month includes 1,800,000 credits per mo
Key features
  • Speech recognition in the browser using Whisper
  • Translation to 20 languages including Chinese, Japanese, Korean, Spanish, Portuguese, French, German, Italian, Russian, Arabic, Hindi, Indonesian, Thai, Vietnamese, Turkish, Polish, Dutch and Ukrainia
  • Burn subtitles into MP4 without watermark
  • Export to SRT, VTT, ASS and TXT formats
  • Live subtitles over video playing in browser tabs via extension
  • Support for multiple video formats including MP4, MOV, WebM and MKV
  • No server processing—all work runs locally on user's machine
  • Voice cloning from 10-30 seconds of audio
  • Voice design with candidate previews
  • Audio transcription with timestamps and SRT/VTT export
  • Voice changer for converting speech
  • Long-form audiobook narration in segments
  • Video dubbing and re-voicing capabilities
  • REST API for programmatic TTS access
  • Multiple audio format support (MP3, WAV, OPUS, PCM)
  • Expression markers like (whispers) or (excited)
What makes it different
  • 100% browser-based with no uploads—the video never leaves your machine
  • Completely open source under AGPL-3.0-or-later so you can verify the code
  • Free forever for transcription, styling and burning—pay only for optional cloud translation
  • No watermark, no file-size limit, no queue, and no account needed to try
  • No software installation required—runs entirely in the browser
  • Natural and expressive speech generation with feeling
  • Private voice models that only your account can access
  • Credit-based flexible pricing with no hidden fees
  • Developer-friendly API with hashed key storage
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)33 −1 (down) since last check3 +1 (up) since last check
Trust Flow (Majestic)101
Citation Flow (Majestic)3015
Referring domains (Majestic)967

4 details filled in for both companies.

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