Is Kling AI free to use?

Yes, Kling AI offers a free tier where users receive 66 daily credits, equating to about six free videos per day [1.7].

Who developed Kling AI?

Kling AI was developed by Kuaishou, a leading Chinese technology company known for its short-video platform.

Can Kling AI add audio to videos?

Yes, starting with Kling 3.0, the model features native multi-lingual audio generation, including lip-synced voices.

What is the maximum resolution for Kling AI videos?

With the latest updates, Kling AI can generate videos in up to 4K Ultra HD resolution at 60 frames per second on the Ultra tier.

Kuaishou vs OpenAI

Kling AI vs Sora

Kling AI (High-quality AI video generation model by Kuaishou.) compared to Sora (Cinematic AI video generation from text).

Kling AI and Sora target adjacent jobs but take different approaches. This page compares them side by side on output paradigm, access, capabilities, and positioning — based on vendor-stated claims as of 2026-04-21 / 2026-04-21.

At a Glance

Kuaishou

Kling AI

High-quality AI video generation model by Kuaishou.

Utilizes a self-developed 3D Variational Autoencoder (VAE) for synchronous spatiotemporal compression [1.1].
Natively generates multi-lingual, lip-synced audio from text without requiring separate audio files.
Features a unique 'Element' system allowing users to upload up to 4 reference elements to maintain character and object consistency.

See Kling AI details →

OpenAI

Sora

Cinematic AI video generation from text

Unprecedented capability to accurately simulate real-world physics and complex character-object interactions.
Maintains high spatiotemporal consistency, meaning 3D elements persist accurately even when temporarily occluded from the camera.
Ability to natively generate full cinematic tracking shots without the need to stitch multiple independent clips together.

See Sora details →

How They Compare

Dimension	Kling AI	Sora
Modality	text-to-video, image-to-video, text-to-image	text-to-video, image-to-video, video-to-video
Release status	ga (2024-06-10)	ga (2024-12-09)
Capabilities	Text-to-Video Generation · Image-to-Video Generation · Multi-lingual Lip Sync · Cinematic Camera Movements	Text-to-Video Generation · Image Animation · Video Extension and Remixing · Native Audio Generation
Max Resolution	4K Ultra HD [1.8]	1080p
Frame Rate	30fps to 60fps	—
Free Tier	66 daily credits	—
Architecture	Diffusion-based Transformer (DiT) / Multi-modal Visual Language (MVL)	—
Max Duration	—	20-25 seconds
Supported Aspect Ratios	—	Widescreen, vertical, square
Pricing	—	$20/mo (Plus, 720p) or $200/mo (Pro, 1080p)

Which Should You Choose?

Pick Kling AI if you need: Utilizes a self-developed 3D Variational Autoencoder (VAE) for synchronous spatiotemporal compression [1.1]..
Pick Sora if you need: Unprecedented capability to accurately simulate real-world physics and complex character-object interactions..
Both come from different vendors — consider your existing stack.