OpenSubs vs AtriumKit

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 AtriumKit
Detail	OpenSubs	AtriumKit
What it does	Free AI subtitle generator that runs entirely in your browser	Turn one click-through into an interactive demo and step-by-step guide
Stage	Not given	Startup
Founded	Not given	2026
Based in	Not given	US
Pricing model	Not given	Freemium
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).	Free: $0 forever with 3 published demos. Pro: $32 per creator per month billed yearly, or $38 per month billed monthly. Team: $58 per creator per month billed yearly, or $69 per month billed monthly. Enterprise: Custom pricing. Viewers are free on all plans.
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	Guided demos with step-by-step tooltips and zoom Clickable demos for sandbox exploration Chrome extension recorder with auto-blur HTML capture with page-text editing AI voiceovers and captions in 15 languages Step-by-step guides with screenshots Lead forms with CRM and webhook integrations Personalized links for prospects Analytics and drop-off tracking Video studio for creating product videos
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	Edit captured pages as text instead of re-recording when UI changes Cheaper than competitors like Arcade and Storylane Works with AI assistants through MCP server on all plans One recording usable across sales, marketing, support and customer success
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	12 +6 (up) since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	30	13
Referring domains (Majestic)	96	1

4 details filled in for both companies.

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