Question 1

What is Kling Video AI Generator?

Accepted Answer

Kling Video is an AI video generator: type a sentence or upload a photo, and it turns into a high-definition video in minutes. We've put three Kling video models — Kling Video O1, Kling v3, and Kling v3 Omni — on the same page so you just pick the right one for the shot.

Question 2

What's the difference between Kling Video O1, Kling v3 and Kling v3 Omni?

Accepted Answer

Kling Video O1 is best for videos with people moving (running, dancing, waving) — motion looks natural and smooth, and you can choose 5- or 10-second clips. Kling v3 is the most full-featured option: it generates videos with sound, renders up to 4K quality, lets you write 3–15 second videos from text or 3–10 second videos from a photo, and lets you tell it what NOT to show (e.g. blurry, distorted). Kling v3 Omni is the easiest to use — just upload one photo, type a sentence describing the action you want, and it brings the photo to life. It also supports videos with sound and 4K, 3–15 seconds.

Question 3

Which Kling model should I pick?

Accepted Answer

Want realistic human motion (running, jumping, waving)? Pick Kling Video O1. Want sound in your video, top 4K quality, or precise control over what NOT to show? Pick Kling v3. Want the easiest way to bring a photo to life? Pick Kling v3 Omni.

Question 4

What durations and resolutions does Kling support?

Accepted Answer

Kling Video O1: 5 or 10 seconds at 720P / 1080P. Kling v3: 3–15s for T2V (3–10s for I2V) at 720P / 1080P / 4K. Kling v3 Omni: 3–15s at 720P / 1080P / 4K.

Question 5

Which aspect ratios does Kling support?

Accepted Answer

All three Kling models support 16:9 (landscape), 9:16 (portrait) and 1:1 (square). In I2V mode the actual ratio may be overridden by the uploaded image's native aspect ratio.

Question 6

How does the '<<>>' reference syntax work?

Accepted Answer

Inside Kling Video O1 or Kling v3 Omni prompts, write '<<>>' to reference the first uploaded image, '<<>>' for the second, and so on. Example: 'Let the character in '<<>>' wave at the camera'. If you upload images but don't reference them, the system automatically prefixes '<<>>'. Kling v3 (classic) does not use this syntax — instead, it uses image_urls and last_frame_image.

Question 7

What are the image requirements for Kling I2V?

Accepted Answer

All Kling models accept JPEG, PNG, BMP and WebP, ≤ 10MB each, and require publicly accessible URLs (no anti-leech protection). Image 1 is the first frame and Image 2 is the last frame. Maximum 2 images per request.

Question 8

How is Kling billed?

Accepted Answer

Kling is billed by model × mode × audio × duration. Kling Video O1: std 33 / pro 44 credits per second (no audio). Kling v3: std 33 / pro 44 / +sound std 50 / +sound pro 66 / 4K 210 credits per second. Kling v3 Omni: std 33 / pro 44 / +sound std 44 / +sound pro 55 / 4K 210 credits per second. Failed Kling generations never consume credits.

Question 9

Can Kling generate audio along with the video?

Accepted Answer

Yes. Toggle 'Generate Audio' for Kling v3 or Kling v3 Omni and the model will produce a synced soundtrack alongside the video. Kling Video O1 currently does not produce audio.

Question 10

Does Kling support negative prompts?

Accepted Answer

Yes — but only Kling v3 currently accepts a negative_prompt field. Use it to suppress unwanted artifacts like 'blurry, low quality, deformed'. Kling Video O1 and Kling v3 Omni do not expose a negative-prompt parameter today.

Question 11

What is 4K mode and which Kling models support it?

Accepted Answer

Kling 4K mode renders at full 4K resolution and is available on Kling v3 and Kling v3 Omni. Kling Video O1 currently caps at 1080P (pro mode). 4K renders cost more credits per second and take longer to complete.

Question 12

Can I keyframe motion with Kling?

Accepted Answer

Yes. Upload 2 images on any Kling model: Image 1 becomes the first frame, Image 2 becomes the last frame, and the model interpolates the motion between them. On Kling v3 you can additionally set last_frame_image explicitly for clarity.

Question 13

What languages can I use for Kling prompts?

Accepted Answer

All three Kling models understand English and Chinese (Simplified). For best results, write detailed descriptions covering the scene, subject, lighting, camera angle and motion. You can mix languages with '<<>>' references freely.

Question 14

How long does Kling take to generate a video?

Accepted Answer

Most Kling jobs finish within 2–5 minutes. The exact time depends on the model, duration and mode — 5-second std renders are fastest, while 15-second 4K renders take longer.

Question 15

How do I write better Kling prompts?

Accepted Answer

Effective Kling prompts include: (1) a clear subject and action, (2) lighting style (e.g. 'golden hour'), (3) camera movement (e.g. 'slow motion', 'drone fly-through'), (4) mood/aesthetic (e.g. 'cinematic'), (5) image references via '<<>>' on O1 / Omni, and (6) a negative prompt on Kling v3 to remove unwanted artifacts.

Question 16

What is the maximum resolution and duration for Kling videos?

Accepted Answer

Kling supports up to 4K (Kling v3 / v3 Omni) and up to 15 seconds per clip (T2V on v3, any input on Omni). Combined with three aspect ratios (16:9, 9:16, 1:1), Kling covers cinematic landscape, vertical short-form, and square social formats.

Kling Video AI Generator

Create Video with Kling

Kling Video Tips

Task History

Kling Video Showcase

How Kling AI Works

Pick a Kling Model

Describe Your Shot

Configure Output

Generate & Download

Powerful Kling Video Generation

Reasoning-Enhanced O1

Kling v3 with Audio

Kling v3 Omni Unified API

First & Last Frame Keyframing

Up to 4K Resolution

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What Creators Say About Kling

Kling AI FAQ