FLUX 3
FLUX 3 upscale enlarges an MP4 of up to 20 seconds by 1.5 to 3 times, keeping its sound, in a faithful precise mode or a detail-rebuilding creative mode.
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FLUX 3 vs Video Upscaler
FLUX 3 or Video Upscaler, tier by tier: matched prices, request fields, limits and the content policy measured on each.
Video Upscaler
Video Upscaler takes one 3 to 60 second clip and returns it as an MP4 at 720p, 1080p, 2K or 4K (default 1080p). Length, aspect ratio, motion, cuts and the audio track stay as sent, and there is no prompt.
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The short answer
Start with the input you have, the result you want and your budget. These are the differences that affect that choice.
- These tools produce different results. Choose the operation you need first; a lower price does not make one a substitute for the other.
These tools produce different results. Choose the operation you need first; a lower price does not make one a substitute for the other.
Current price
Price at the same setting
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.
FLUX 3: Upscale mode: Precise $0.528 / output seconds · Upscale mode: Creative $0.758 / output seconds
Video Upscaler: 1080p $0.006 / output seconds · 720p $0.006 / output seconds · 2K $0.012 / output seconds · 4K $0.024 / output seconds
About this comparison
Controls and limits
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 | FLUX 3 | Video Upscaler |
|---|---|---|
| Supported tasks | upscale | upscale |
| Resolution tiers | Not offered | 720p · 1080p · 2K · 4K |
| High-resolution tier | Yes | Yes |
| Execution | Submit, then poll or take the callback | Submit, then poll or take the callback |
| Request timeout | 60 minutes | 180 minutes |
| Availability | Live | Live |
Do low-filter models allow every request?
Content policy, side by side
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.
FLUX 3
Filtered
This model refuses requests beyond its own limits outright. Measured, not assumed — models we have not measured carry no label at all.
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?
Request body, field by field
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.
- 1 fields appear in both request bodies under the same names. video_url
- Only FLUX 3 accepts: prompt, upscale_factor, upscale_mode.
- Only Video Upscaler accepts: resolution.
- FLUX 3 requires video_url.
- Video Upscaler requires video_url.
- Both reject unknown fields outright, so a parameter left over from the other model comes back as a validation error instead of being quietly ignored.
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Moving from one to the other
The model identifiers are black-forest-labs/flux-3/upscale and spicyapi/video-upscaler-v1/upscale, 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
Which is cheaper, FLUX 3 or Video Upscaler?
Which is cheaper, FLUX 3 or Video Upscaler?
These tools produce different results. Choose the operation you need first; a lower price does not make one a substitute for the other. Prices may change; check the estimate shown for your actual settings before submitting.
How long can a single request run?
FLUX 3 allows 60 minutes per task and Video Upscaler allows 180. 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.