Mixer AI › Knowledge Base › Comparison › Kling 4.0 vs Topaz Video Upscaler: specs and price

Kling 4.0 vs Topaz Video Upscaler: specs and price

Both models are available in the current Mixer AI catalog, but they solve different jobs within the same media type. This page therefore does not label one as universally better: the table shows compatible inputs, limits and pricing, while the visual section separates valid A/B checks from different workflow stages.

Updated 2026-10-28

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Key differences

Kling 4.0: A clip of up to 30 seconds from text and references or from a chain of keyframes: named characters, voice samples and exact frames.

Topaz Video Upscaler: Enlarge a clip you have already selected without generating the scene again.

Specifications

Spec	Kling 4.0	Topaz Video Upscaler
Model variants	Reference / Keyframes	Topaz Video
Generation modes	from text / from first and last frames / from references	—
First frame	Yes	No
Last frame	Yes	No
Input photos	up to 8	No
Input videos	up to 5	No
Input audio files	up to 3	No
Input video length	2–30 s	No
Minimum duration	3 s	—
Maximum duration	30 s	—
Resolutions	720p / 1080p	2x / 4x
Aspect ratios	9:16 / 16:9 / 1:1 / auto / 21:9	Follows the input
Prompt limit	8,000 characters	0 characters
Price, 1 s (different quality)	≈ 20.09 coins · 720p	≈ 5.93 coins · 1×

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

Do not force tools with different jobs into the same test. First compare the inputs each one accepts and the output it is meant to produce. If they share a workflow, run an A/B test on the same source; otherwise judge each at its own stage: generation, Motion Control, avatar creation or upscaling.

What to inspect with Kling 4.0

A clip of up to 30 seconds from text and references or from a chain of keyframes: named characters, voice samples and exact frames.

Text and references: up to 10 reference photos and 5 videos, up to 7 characters (2–4 photos or one 3–8 second video clip each) and up to 3 voice samples. The Video sound switch applies only to reference videos.
Keyframes: a first frame, a last frame and up to 8 middle frames. The total number of frames depends on the duration and never exceeds 10.
The modes do not mix: Keyframes accepts no video, and characters and voices belong only to Text and references mode.
A hero photo must be at least 300 pixels on the short side; a video character needs at least 700 pixels and one continuous shot.

What to inspect with Topaz Video Upscaler

Enlarge a clip you have already selected without generating the scene again.

1× processes without enlarging; 2× and 4× multiply the frame dimensions.
One MP4, MOV or MKV file, up to 50 MB on the website. No prompt required.
A 4× scale does not recover true detail that never existed in the source.
Upscaling does not correct the story, pose or incorrect object movement.

How to run a fair comparison

Identify the workflow stage first: create new media, transfer motion, make a talking avatar, or improve an existing file.
Compare specifications only where they mean the same thing: accepted inputs, limits, available resolution and the real price of the needed mode.
If a shared workflow exists, use the same source. If it does not, do not infer visual quality from non-equivalent outputs.
Tools for different stages can be used sequentially rather than as substitutes.

Sources

Prices, availability and specifications come from the Mixer AI catalog. This is not an independent test: try both models on the same task before choosing.

Prices and availability — Mixer AI catalog

What we compare

Kling 4.0

A clip of up to 30 seconds from text and references or from a chain of keyframes: named characters, voice samples and exact frames.

Topaz Video Upscaler

Enlarge a clip you have already selected without generating the scene again.

FAQ

How should I compare Kling 4.0 and Topaz Video Upscaler fairly?

Compare purpose and inputs first. Test any shared workflow on the same source; evaluate different workflows separately by output quality, constraints and the price of that stage.

Are both models available in Mixer AI?

Yes. Both tools are in the current Mixer AI catalog. They are often used one after the other: for example, one model makes the video and another improves the file.

Which model is better?

There is no single winner. First rule out the model that lacks the duration, first or last frame, sound or resolution you need, then compare clips on your own scene. The table highlights only measurable differences.