Model comparisons
Kling 4.0: Filtered. PixVerse V6 Max: Light. Kling 4.0 renders up to 30 seconds per request; PixVerse V6 Max stops at 15.
Kling 4.0 image-to-video animates your opening frame into a clip of 3 to 30 seconds at 720p or 1080p. Add up to 9 in-between keyframes, or a closing frame and up to 8, to direct the path; every clip comes with a stereo soundtrack.
View model details →View sample outputs →PixVerse V6 Max image-to-video animates one first-frame picture into a 1 to 15 second clip at 360p to 1080p, keeping the picture's shape, with optional generated sound.
View model details →View sample outputs →Compare
Start with the input you have, the result you want and your budget. These are the differences that affect that choice.
Compare the published examples, then try the same input on both models with matching settings.
The Spicy Index and Freedom Score for both models, from the same daily calculation as the leaderboards.
| Measure | Kling 4.0 | PixVerse V6 Max |
|---|---|---|
| Spicy Index | 68.9 | Not yet tested |
| Freedom Score | 22.0 | Not yet tested |
| Evidence | Tested 6 of 6 probe types · 8 runs | — |
| Range if the rest pass | 22.0–27.5 | — |
| Price | $0.942 per 5-second clip | $0.244 per 5-second clip |
| Reviews | Read the Kling 4.0 review | No review yet |
Preliminary · capability and freedom only, no quality evidence yet
See both on the leaderboard →Current price
A start price answers a different question than the one you have. These are the tiers both models publish, matched setting for setting, in US dollars per billed unit with no conversion step in between.
These two bill on different tiers, so there is no row to line up. Each one's own published tiers are listed here instead.
Kling 4.0: 720p $0.188 / output seconds · 1080p $0.282 / output seconds
PixVerse V6 Max: no audio · 360p $0.027 / output seconds · no audio · 540p $0.04 / output seconds · with audio · 360p $0.04 / output seconds · no audio · 720p $0.049 / output seconds · with audio · 540p $0.049 / output seconds · with audio · 720p $0.067 / output seconds · no audio · 1080p $0.098 / output seconds · with audio · 1080p $0.124 / output seconds
Arithmetic on the published rates at each model's own default setting, not a quote. The console prices your actual settings before a request is accepted.
About this comparison
Every row here is read from the JSON Schema the endpoint validates against, so it matches what the API will really accept rather than a feature list written by hand.
Swipe horizontally to compare all fields.
| Controls and limits | Kling 4.0 | PixVerse V6 Max |
|---|---|---|
| Supported tasks | image-to-video | image-to-video |
| Clip length | 3–30 seconds | 1–15 seconds |
| Resolution tiers | 720p · 1080p | 360p · 540p · 720p · 1080p |
| Aspect ratios | auto · 16:9 · 9:16 · 1:1 · 21:9 | Not offered |
| Reference material | Up to 9 files | Not offered |
| Audio output | Yes | Yes |
| High-resolution tier | Yes | Yes |
| Seed | No | Yes |
| Execution | Submit, then poll or take the callback | Submit, then poll or take the callback |
| Request timeout | 60 minutes | 60 minutes |
| Availability | Live | Live |
Do low-filter models allow every request?
Two separate facts sit behind these labels. The first is what we do, which is nothing: no platform content filter, and no maturity flag to set on a request. The second is what each model does on its own, and that is the only part that varies between these two.
Kling 4.0
This model refuses requests beyond its own limits outright. Measured, not assumed — models we have not measured carry no label at all.
PixVerse V6 Max
Content restrictions are lighter, but the model may still limit some text-only prompts. Image-guided modes can offer more control. Applicable content limits still apply.
Use these content labels to shortlist models, then open each model page for available examples and content-test details.
The label never changes your obligations. Age, consent, real-person likeness and the law where you operate stay with you, and SpicyAPI does not inspect each request.
Can I swap the model ID without changing the request body?
The task lifecycle is shared; the body is not. Each endpoint publishes its own JSON Schema and the API validates against that, so this is the list to reconcile before a switch.
Compare
The model identifiers are kling/4.0/image-to-video and pixverse/v6-max/image-to-video, and both go in the same field of the same request.
Both run the same way: submit the task, then poll it or take the callback. Queueing and retry logic carry over unchanged.
Both use the same submit-and-track flow, but their required inputs may differ. Check each model page before switching.
One key, one balance, one set of spend caps. Both bill to the same account in US dollars, and the per-key daily, monthly and lifetime limits apply to whichever one you call.
Questions developers ask
The two bill on different tiers, so there is no like-for-like row: Kling 4.0 starts at $0.188 / output seconds and PixVerse V6 Max at $0.027 / output seconds. Prices may change; check the estimate shown for your actual settings before submitting.
Kling 4.0 allows 60 minutes per task and PixVerse V6 Max allows 60. Those are ceilings rather than typical times — most requests finish far sooner — but they are what your own client timeout has to survive.
Prices and capabilities shown here come from the current public model catalogue. Check each model page for its latest inputs and examples.