What Opus Clip does
Opus Clip is an AI video repurposing tool. You give it a long-form source - a YouTube video, a Zoom recording, a podcast - and it scans the footage to find the strongest moments, then outputs a batch of short 9:16 clips. Each clip comes with auto-generated animated captions, AI reframing that keeps the active speaker centered, and an AI Virality Score (0-100) that predicts how likely the clip is to perform. Recent versions add generative B-roll and a built-in social scheduler.
It is genuinely good at what it does: reviewers report saving 8-10 hours of manual editing per batch, with most clips close to post-ready. The trade-off is that the AI works from patterns, so it can misjudge humor, sarcasm, or context-dependent moments and cut clips at awkward points - you still review each one before posting.
Opus Clip is the right tool when you have long content and want many short clips fast.
What Reelyze does
Reelyze is an AI short-form video analyzer. You do not upload anything or connect an account - you paste a public Reel, TikTok, or YouTube Short URL, and Reelyze watches the actual video frame by frame the way an editor or coach would. It scores the hook, maps the retention curve, identifies where on-screen text and pacing help or hurt, and points to the exact second viewers left - then gives you a clear verdict and specific changes to make.
Where most tools show you a number (4,000 views) and leave you guessing, Reelyze explains the why. It also includes free no-sign-up tools (transcript generator, video downloader, audio/MP3 extractor), a Content Studio that drafts hooks and scripts from what is working in your niche, and Reelyze Chat for strategy questions.
Reelyze is the right tool when you want to understand why a short video did or did not work - and fix it - whether it is your clip or a competitor's.
The core difference: create vs diagnose
The simplest way to think about it: Opus Clip produces content; Reelyze diagnoses content. Opus Clip's virality score is a prediction about clips it generates from your long video. Reelyze's analysis is a diagnosis of a short video's actual structure and where it loses viewers. One is upstream (making the clip), the other is downstream (understanding performance and improving the next one).
Feature comparison
| Reelyze | Opus Clip | |
|---|---|---|
| Primary job | Analyze why short videos underperform | Repurpose long video into short clips |
| Input | A public Reel / TikTok / Short URL | Your long video or a YouTube link |
| Output | Frame-by-frame diagnosis: hook score, retention curve, drop-off second, specific fixes | Auto-cut vertical clips with captions, reframing, virality score |
| Account/upload needed | No - analyzes from a URL | Yes - upload or link your source video |
| Works on competitors' videos | Yes - any public short | No - works on your own source footage |
| AI scoring | Diagnoses actual performance and drop-off | Predicts virality (0-100) of generated clips |
| Extra tools | Transcript, downloader, MP3 extractor, Content Studio, Chat | AI B-roll, social scheduler, team workspace |
| Free tier | Yes - free tools + first analysis, no card | Yes - 60 min/mo, watermarked exports |
| Paid plans | From $19/mo | Starter $15/mo, Pro $29/mo |
Pricing
Opus Clip has a free-forever plan (60 processing minutes per month, watermarked exports), then Starter at $15/mo and Pro at $29/mo, where most editing features, all aspect ratios, and the scheduler unlock. Processing is credit-based: one minute of source video equals one credit, regardless of how many clips it produces.
Reelyze is free to start with no card - the free tools and your first analysis are included - and paid plans begin at $19/mo. Pricing is per analysis rather than per minute of source footage, since you are analyzing finished short videos, not processing long ones.
Which should you use?
For most creators the honest answer is both, for different steps of the workflow:
- Use Opus Clip to turn long-form content into a batch of short clips quickly.
- Use Reelyze to understand why a clip underperformed - or to study a competitor's winning short - and to fix the hook, pacing, or drop-off before your next post.
If you only publish native short-form (you film directly for Reels/TikTok and do not repurpose long videos), Opus Clip's core repurposing job may not apply to you, while Reelyze's diagnosis does. If you mainly chop up podcasts or webinars and just need volume, start with Opus Clip and add Reelyze when you want to know why some clips land and others do not.