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OpenCaptions vs ReelRebel.ai

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

OpenCaptions compared with ReelRebel.ai
DetailOpenCaptions logo OpenCaptionsReelRebel.ai logo ReelRebel.ai
What it doesFree, open-source video captions you control AI clip editor that turns long videos into vertical clips optimized for watch-through
StageStartup Not given
Founded2026 Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingFree app (1080p at 30 fps), Pro one-time purchase 14.99 €, self-hosting free Free: 5 exports per month with watermark, no credit card required. Pro: $15 per month (or $144 per year) for 50 exports without watermark. Studio: $49 per month (or $468 per year) for 150 exports without watermark, plus speaker switching, perfect sync for separate mics, auto B-roll, and logo brandin
Key features
  • 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
  • Hook-first clip detection that finds complete moments with strong openings
  • Hook Coach that grades first 2.5 seconds and suggests improvements
  • AI Reframe to keep every face in frame across shots
  • Retention check that flags slow spots before posting
  • Local processing on device for privacy and fast performance
  • Export to XML for final editing in Premiere, Resolve or Final Cut
  • Speaker switching with punch-ins for multi-mic shows
  • Automatic B-roll suggestions from Wikimedia Commons and Openverse
What makes it different
  • 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
  • Video never leaves your device—all processing happens locally on browser
  • No minute meter or credit system—charge only per export, not video length
  • Retention-focused with Hook Coach to optimize for watch-through rates
  • Free forever plan with no card required to start
  • Captions keep original words unchanged with creator making final edits
Community votes00
DR (Domain Rating by Ahrefs)Not checked yet no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)00
Referring domains (Majestic)00

5 details filled in for both companies.

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