Kling 4.0 vs Sandcastles

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

Kling 4.0 compared with Sandcastles
Detail	Kling 4.0	Sandcastles
What it does	AI video generator for creating cinematic videos from text, images, and references with up to 30-second 4K output	Create viral short-form videos in seconds
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Freemium	Paid
Pricing	Free: 50 daily credits for eligible accounts. Monthly subscriptions: Basic $16.00/month (800 credits), Standard $32.00/month (1,600 credits), Pro $80.00/month (4,000 credits). Yearly billing available at 20% discount: Basic $192.00 yearly, Standard $384.00 yearly, Pro $960.00 yearly. Credit packs av	Pro: $49/month (billed monthly) or $39/month (billed yearly). Visionary: $99/month (billed monthly) or $79/month (billed yearly). Titan: $499/month (billed monthly) or $399/month (billed yearly).
Key features	Two-channel stereo audio with improved audiovisual synchronization Text-to-video and image-to-video generation Multimodal video editing for targeted changes Multiple aspect ratios including 21:9, 16:9, 1:1, and 9:16 Daily free credits for eligible accounts Watermark-free downloads with paid plans	Customizable feed of successful channels from Instagram, TikTok, and YouTube Find top-performing viral outlier videos in any niche In-depth analysis of why videos went viral with hooks and storytelling frameworks Instant transcript downloads from any video AI-powered script writing using proven storytelling frameworks Hook template generation with millions of validated views Project organization to collect and manage winning video ideas Monthly credits system for analyzing videos, writing scripts, and generating reports Multiple workspace creation to organize content by niche Personal analytics tracking and competitor monitoring
What makes it different	Up to 10 flexible keyframes for precise visual direction across 30-second videos Multimodal reference system combining images, videos, subjects, and voice Professional-grade 10-bit HDR output at 1080p and 4K resolutions	Analyzes millions of videos daily to find top 1% outliers in every niche Data-backed storytelling frameworks based on billions of views All-in-one platform combining research, analysis, and script generation No social media account connection required to get value
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)	5 no change since last check	48 +1 (up) since last check
Trust Flow (Majestic)	6	8
Citation Flow (Majestic)	23	32
Referring domains (Majestic)	11	151

5 details filled in for both companies.

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