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Kling 4.0 vs Weights AI

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 Weights AI
DetailKling 4.0 logo Kling 4.0Weights AI logo Weights AI
What it doesAI video generator that creates realistic videos up to 30 seconds from text or images with native 4K resolution and synchronized audio Free AI song cover generator with 2,000+ community voices or your own
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Freemium
PricingMini Plan: 3,000 credits per month (yearly); Standard Plan: 6,600 credits per month (yearly); Plus Plan: 14,400 credits per month (yearly); Pro Plan: 26,000 credits per month (yearly, 65% off limited time). Credits are used per generation based on resolution, output length and audio settings. Free: 25 credits when you sign up. Starter: $4.99/month for 700 credits (or $59.88/year). Pro: $9.99/month for 2,000 credits (or $119.88/year). Credit pack: 1,500 credits for $19.99 (one-time purchase, never expire).
Key features
  • Generate videos from text prompts up to 30 seconds with 10 keyframes
  • Transform static images into dynamic videos with synchronized motion
  • Generate videos in multiple resolutions up to 4K with 16:9, 9:16 and 1:1 aspect ratios
  • Synchronized stereo audio and lip-sync for dialogue and performances
  • Support up to 15 reference assets including images, videos and subjects
  • Create videos in multiple visual styles including vlog, claymation, felt art and 3D cyberpunk
  • Generate dialogue in nine languages with multiple accents and dialects
  • Kling 4.0 Flash mode for faster iterations and frequent short-video creation
  • Multi-character reference images and character consistency across shots
  • Edit specific video sections, remove elements, or change visual style while preserving desired parts
  • 2,000+ community voice models
  • Train your own voice model from 10+ minutes of singing
  • Supports MP3, WAV, M4A, AAC, FLAC and OGG files up to 50 MB
  • Record singing in the browser
  • Pitch matching to adjust key for different voice ranges
  • AI covers ready in about one minute
  • Download covers as MP3
  • Private voice models
What makes it different
  • Up to 10 keyframes for directing character states, scene changes and emotional beats
  • Realistic motion with synchronized stereo sound and natural facial expressions
  • Support for 15 combined reference assets to guide consistent appearance and movement
  • Practical workflows designed for marketing, product storytelling and content production
  • Successor to Weights.gg with same community RVC voices
  • Runs entirely in your browser, no installation needed
  • Free credits to start without payment
  • AI separates vocal from music for natural remixing
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes10
DR (Domain Rating by Ahrefs)17 −2 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)233
Citation Flow (Majestic)2421
Referring domains (Majestic)718

5 details filled in for both companies.

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