Mixer AI › Knowledge Base › Comparison › Veo 3.1 vs Kling 2.1: technical and visual comparison

Veo 3.1 vs Kling 2.1: technical and visual comparison

This compares two models that are available in the current Mixer AI catalog. The table below is built from current product controls, while the visual section shows what to inspect with the same inputs and prompt instead of inventing one universal winner.

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Key differences

Veo 3.1: A short scene with both picture and sound in mind, from rustling fabric to a character's line.

Kling 2.1: Turn a photo into a short moving shot, or start from text with Master.

Start with the specification table: it reflects current modes, input media, duration, resolution, aspect ratios and a normalized price where a fair comparison is possible.

Specifications

Spec	Veo 3.1	Kling 2.1
Model variants	Lite / Fast / Quality	Standard / Pro / Master
Generation modes	from text / from first and last frames / from references	from text / from first and last frames
First frame	Yes	Yes
Last frame	Yes	Yes
Input photos	up to 3	No
Output audio	Native	No
Minimum duration	4 s	5 s
Maximum duration	8 s	10 s
Resolutions	720p / 1080p	No separate selector
Aspect ratios	9:16 / 16:9 / auto	9:16 / 16:9 / 1:1
Prompt limit	1,000 characters	5,000 characters
Price (different settings)	21 coins · 4 s · 720p	103 coins · 5 s · No separate selector

There is no shared resolution for a direct price comparison, so each price includes its setting and is not highlighted as cheaper.

What to compare visually

For a fair A/B test, use the same scene and, where both modes allow it, the same first frame. Inspect motion continuity, character and object consistency, physics and contacts, camera behavior, temporal deformation, in-clip cuts and audio synchronization.

What to inspect with Veo 3.1

A short scene with both picture and sound in mind, from rustling fabric to a character's line.

Lite, Fast and Quality are separately priced versions. Test the idea with an affordable option, then compare another version using the same brief.
Text mode needs no images. Frame mode takes a first image and an optional last one. Reference mode accepts 1–3 photos for subjects, products and the scene.
Review written signs and pronunciation separately from the visual quality.
Very different first and last frames can produce an awkward transformation rather than a believable transition.

What to inspect with Kling 2.1

Turn a photo into a short moving shot, or start from text with Master.

Standard: one photo. Pro: one or two photos. Master: text or one photo.
Choose 5 or 10 seconds. A separate negative-prompt field is available.
Standard and Pro cannot start from text alone.
Complex hand movements and sharp turns need close inspection.

How to run a fair comparison

Lock one prompt, aspect ratio and a duration or resolution that both models actually support.
If input modes differ, compare the shared workflow first and test each model's extra controls separately.
Run more than one attempt: a single output reflects one seed, not the model's overall consistency.
Score prompt adherence, visual artifacts, reference preservation and the cost of the setting you would really use separately.

What we compare

Veo 3.1

A short scene with both picture and sound in mind, from rustling fabric to a character's line.

Kling 2.1

Turn a photo into a short moving shot, or start from text with Master.

FAQ

How should I compare Veo 3.1 and Kling 2.1 fairly?

Use a workflow both models share, keep inputs and prompt identical, then run several generations. Compare prompt adherence, visual consistency and the price of the setting you need as separate dimensions.

Are both models available in Mixer AI?

Yes. This page is generated only for models in the current public Mixer AI catalog; if a model leaves the catalog, the automated comparison must stop passing validation.

Which model is better?

There is no universal answer. First eliminate a model that cannot accept the input, duration, resolution or format you need, then compare outputs on your own scene. The table highlights only measurable advantages in individual specifications.