CorridorKey 2.0 vs OpenCaptions

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

CorridorKey 2.0 compared with OpenCaptions
Detail	CorridorKey 2.0	OpenCaptions
What it does	Neural green and blue screen keying that rebuilds hair, motion blur, defocus and glass into clean linear alpha	Free, open-source video captions you control
Stage	MVP	Startup
Founded	Not given	2026
Based in	US	Not given
Pricing model	Paid	Freemium
Pricing	Personal: $58.91 one time (beta pricing, regular $117.81 from November 21). Studio: $42.50 per seat (founder pricing, back to $85.00 on November 21) for 5 to 24 seats, 25+ negotiated. Prices include VAT and are auto-adjusted for region. One-time purchase with 14-day money-back guarantee.	Free app (1080p at 30 fps), Pro one-time purchase 14.99 €, self-hosting free
Key features	One-click keying for most shots Time awareness to eliminate flicker and chattering AlphaHint artistic control via mask images or video Native 4K and higher resolution support HDR support and floating point color depth Works on any color background Standalone app for bulk processing Available for DaVinci Resolve, Nuke, After Effects, Premiere Pro and Blender Predicts transparent foreground colors intelligently	Transcription with Whisper, Parakeet, or Apple Speech Word-by-word animated captions Caption styling and correction Export as MP4, WebM, ProRes, SRT, VTT or JSON iPhone app with on-device transcription Self-hosted Docker deployment HTTP API for scripts and pipelines Integration with Claude, Cursor and MCP clients Support for 13 interface languages GPU acceleration optional for faster transcription
What makes it different	Solves the un-mixing problem that other keying tools cannot One purchase covers every major VFX software without subscription Production-tested and used internally at Corridor Digital for 400+ VFX shots Time-aware analysis eliminates flicker and preserves fine details like hair	Open source with Rust engine shared across browser, app and server No uploads: iPhone app transcribes on device, self-hosted keeps videos local Free with one-time Pro purchase, no subscription required Run on your own server with Docker, no dependency on external services Agent integration for video captioning from Claude and other AI tools
Community votes	0	0
DR (Domain Rating by Ahrefs)	26 −1 (down) since last check	Not checked yet no change since last check
Trust Flow (Majestic)	13	0
Citation Flow (Majestic)	11	0
Referring domains (Majestic)	7	0

6 details filled in for both companies.

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