OpenSubs vs ZMS AI

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 ZMS AI
Detail	OpenSubs	ZMS AI
What it does	Free AI subtitle generator that runs entirely in your browser	AI creative suite for generating videos and images from text prompts and visual references
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	Paid
Pricing	Free: 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).	Basic: $10 one-time for 1,000 credits ($0.0100 per credit). Major: $30 one-time for 3,500 credits ($0.0086 per credit). Profession: $99 one-time for 14,000 credits ($0.0071 per credit). Credits never expire and are shared across all connected image and video models.
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 AI video generation from text or images Reference-led image and video creation with upload control Multiple AI model options including Seedance, Gemini, and Grok Model-specific output settings and controls AI Video Extender to generate footage before or after existing video AI Clothes Changer to modify clothing in photos One-time credit purchases with no expiration Unified library to organize and manage all creations Six-month retention of generated works in My Creations
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 subscription required; credits never expire One shared credit balance works across all connected image and video tools Estimated cost shown before generation begins Support for both text-to-media and image-to-media workflows
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	34 −1 (down) since last check	8 no change since last check
Trust Flow (Majestic)	10	4
Citation Flow (Majestic)	30	30
Referring domains (Majestic)	96	71

4 details filled in for both companies.

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