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OpenSubs vs Z-Image

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
DetailOpenSubs logo OpenSubsZ-Image logo Z-Image
What it doesFree AI subtitle generator that runs entirely in your browser Free AI image generation platform with lightning-fast creation
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: 10 credits per day. Premium: $7/month (2,000 credits per month) or $2.45 per 1,000 credits annually. Elite: $12/month (5,000 credits per month) or $1.98 per 1,000 credits annually. Video Pro: $50/month (25,000 credits per month for video generation). Pay as you go also available at $3.50 per 1
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
  • AI Image Generation from text prompts
  • 4K print-quality output
  • Bilingual prompt support in English and Chinese
  • Image editing with natural language
  • Prompt extraction from images
  • Creative Engine for prompt expansion
  • Multiple AI models including GPT Image 2 and Qwen Image 3
  • Video generation with AI
  • Hundreds of artistic styles
  • 2-5 second generation speed
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
  • Lightweight 6B parameter model optimized for fast generation
  • 37% better Chinese language accuracy than alternatives
  • DiT architecture optimization for flagship quality
  • Open-source model that can run locally
  • Actually free with transparent pricing and clear safety rules
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 check30 no change since last check
Trust Flow (Majestic)1013
Citation Flow (Majestic)3031
Referring domains (Majestic)96158

4 details filled in for both companies.

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