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Kling 3.0 vs Veo 3.1

Kling 3.0 and Veo 3.1 are both currently visible in Mixer AI. Their product-level differences are substantial: Kling reaches 15 seconds with Multi-shot, Elements and 4K; Veo reaches 8 seconds with first/last frame and up to three image references. The observations come from two independent detailed tests rather than one controlled A/B.

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Key differences

Kling 3.0: 0–2 images, Multi-shot, up to 3 Elements, native audio, 15 seconds, up to 4K.

Veo 3.1: first/last frame, up to 3 image references, native audio, 4/6/8 seconds, 720p/1080p.

The Kling review showed strong complex-camera execution and stable faces; the Veo review showed good camera/audio results in some scenes but failures on difficult physics and text.

Specifications

Spec	Kling 3.0	Veo 3.1
Model variants	Standard / Pro / 4K	Lite / Fast / Quality
Generation modes	from text / from first and last frames	from text / from first and last frames / from references
First frame	Yes	Yes
Last frame	Yes	Yes
Input photos	No	up to 3
Multi-shot	Yes	No
Elements	up to 3 elements	No
Output audio	Can be enabled or disabled	Native
Minimum duration	3 s	4 s
Maximum duration	15 s	8 s
Resolutions	720p / 1080p / 4K	720p / 1080p
Aspect ratios	9:16 / 16:9 / 1:1	9:16 / 16:9 / auto
Prompt limit	2,500 characters	1,000 characters
Price, 4 s · 1080p	46 coins · Pro	23 coins · Lite

Kling 3.0: camera, faces and dialogue

Kling followed an unusual camera instruction: after an explosion the frame briefly loses orientation and then recovers.
In another test, the reviewer notes that the camera movement stops at the requested point and the slight handheld shake feels natural.
In a multi-shot dialogue scene, the reviewer calls out lip sync and stable faces across different angles.

Veo 3.1: audio, camera and difficult physics

In one test, Veo followed camera perspective and movement well and the reviewer also liked the sound.
Across physics/anatomy checks the results were uneven: a gymnast did not perform the requested full flip and other scenes produced physically incorrect motion.
In a camera push/tilt plus text test, Veo used a fade instead of one continuous move and rendered the requested text incorrectly.

Where the comparison is useful

Because the sources are independent, their observations should not be converted into scores. They do expose different failure modes. Test Kling on complex multi-step camera/action changes and Veo on difficult physics, continuous compound camera instructions and in-scene text. Also account for the product duration gap: 15 seconds versus 8.

Longer clip: Kling 3.0.
First/last frame and up to three image references: Veo 3.1.
Multi-shot, Elements and 4K: Kling 3.0.
Both expose native audio.