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OpenSubs vs z image turbo

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 z image turbo
DetailOpenSubs logo OpenSubs z image turbo
What it doesFree AI subtitle generator that runs entirely in your browser Ultra-fast text-to-image AI for creators and developers
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelNot given Paid
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). Creator: $15 (50% off $30) for 600 image generations, commercial use license, batch generation, priority support, credits valid for 1 year. Studio: $59 (50% off $118) for 3000 image generations, commercial use license, batch generation, priority support, credits valid for 1 year.
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
  • Turbo inference with latency-optimized sampling for rapid feedback loops and batch generation
  • Prompt and negative prompt guidance to control compositions and remove artifacts
  • High-resolution 1024px outputs with strong edges, textures and lighting control
  • One-click style presets including cinematic, product, portrait and illustration looks
  • History and downloads to keep recent generations and export results
  • Production-ready with observability, rate limits and safe defaults
  • 0.7 seconds average first-frame latency on A100 GPUs
  • 8-12GB VRAM friendly for local runs and lean cloud deployments
  • Commercial use license included with all plans
  • Batch generation capability for processing multiple images
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
  • Exceptional speed with 0.7s first-frame latency enabling real-time creative workflows
  • Consistent character and style generation for maintaining visual coherence across batches
  • Low hardware requirements optimized for 8-12GB VRAM for local and cloud deployment
  • Production-ready reliability with observability and safe defaults for enterprise use
  • Commercial rights included enabling direct use of generated images in professional projects
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)34 −1 (down) since last check16 no change since last check
Trust Flow (Majestic)105
Citation Flow (Majestic)3017
Referring domains (Majestic)9635

4 details filled in for both companies.

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