Portrait detail
4K · SeedVR2
More detail. Up to 4K.
Bring the long edge to 3,840 pixels while keeping your image’s proportions. See the exact dimensions before you begin.
Your image, enlarged
Fine-tune the model
This image1 credits / MPSee the price before processing
Sign in to processProcessing requires purchased credits. No free trials or signup credits.
Sample resultSeedVR2 · 3840 × 2560
Sample input is AI-generated; the result was processed by the named FAL model.
Look closer
The same image, on both sides. Drag the handle to inspect what changed.
Feathers & texture
4K · SeedVR2
Materials & edges
4K · SeedVR2
How these examples were made
Original inputs were created with an image-generation tool, then downsampled into test uploads. Every enhanced image was returned by the named FAL model. These are controlled synthetic examples, not customer photos or guarantees of results.
Choose your upscaler
Two real models. Different strengths, different prices. Compare the same input before you choose.
SeedVR2
A lower-cost option for general upscaling. Start here for textures, products and everyday images, then inspect the result.
1 credits per output MPOutput: JPG / PNG / WEBPUse this modelCrystal Upscaler
Explicit creativity control for reconstructed detail, including portraits. Higher creativity is not automatically more faithful.
7 credits per output MPOutput: JPG / PNGUse this modelKnow what you’re sending
The site limit is our resource cap, not a claim about the model’s absolute maximum. Parameters and prices were checked against the FAL API on November 4, 2026.
| Parameter | SeedVR2 | Crystal |
|---|---|---|
| Available here | 1×, 2×, 4×; 4K long-edge mode | 1×, 2×, 4×; 4K long-edge mode |
| Default | 2×; original proportions retained | 2×; original proportions retained |
| Creativity | Not supported | 0–10 |
| Noise scale | 0–1 | Not supported |
| Text Prompt | Not accepted by either endpoint | Not accepted by either endpoint |
| Output format | JPG, PNG, WebP | JPG, PNG |
| Site output limit | 64 MP per image | 64 MP per image |
| Official maximum resolution | Not specified in the published schema | Not specified in the published schema |
| Upload | JPG, PNG, WebP · 10 MB maximum | JPG, PNG, WebP · 10 MB maximum |
| FAL reference cost | US$0.001 / MP | US$0.016 / MP |
What 4K means here
The 4K setting brings the longest edge to 3,840 pixels without cropping or stretching. A 16:9 landscape becomes 3,840 × 2,160; a 3:2 photo becomes 3,840 × 2,560.
Already at or above that long-edge size? We do not downscale it secretly. Choose a scale factor instead. Very small inputs can exceed the selected model’s scale limit.
Check the displayed output dimensions and credit estimate. A 4K label alone tells you neither how much detail is real nor how much a model call costs.
Pay for the pixels you need
One credit is $0.01. Your chosen model and output size determine the cost. No subscription, no signup bonus, no hidden “free” trial.
SeedVR2
$0.01 / MP
1 credits per output MP
Crystal Upscaler
$0.07 / MP
7 credits per output MP
See the price before processing
Billed in whole output megapixels, rounded up, with a 1 MP minimum. 2× width and height means 4× the pixels; 4× means 16×.
Failed processing returns your credits. Higher creativity does not cost extra within the same model and output size.
Example: 3 MP input → 12 MP at 2×SeedVR2: 12 credits · $0.12Crystal Upscaler: 84 credits · $0.84
Choose a credit pack
Starter
For a focused project
$5.00500 credits · one-time paymentRegular
Keep a balance ready
$15.001,500 credits · one-time paymentStudio
For larger image batches
$30.003,000 credits · one-time paymentPurchased credits do not expire. All packs use the same credit value: no bonus-credit dilution. Taxes, if applicable, are calculated at checkout. Checkout opens after payment setup.
A few useful answers
Is there a free trial?
No. All new image processing uses purchased credits. You can inspect the already-generated examples without uploading or spending credits.
Why do the models cost different amounts?
Their underlying processing costs differ. SeedVR2 is 1 credit and Crystal is 7 credits per output MP here. The displayed quote is calculated from your selected model and resulting pixel dimensions.
Does 4× cost twice as much as 2×?
For the same image and model, 4× produces four times the output pixels of 2×. Whole-MP billing and the 1 MP minimum can change the ratio for very small images.
Do I need to write a Prompt?
No. These Crystal and SeedVR2 endpoints accept an image and numeric controls, not a text Prompt. We only send parameters the selected endpoint supports.
What happens to uploaded images?
The image is sent to FAL for processing and stored privately by this service. Our uploads expire after 7 days and outputs after 30 days. FAL has its own processing and retention policies; read the privacy notice before uploading sensitive images.
Will AI recover the exact original details?
Not necessarily. AI can reconstruct plausible detail, including incorrect detail. Use the comparison to inspect faces, text and repeating patterns; the output is not documentary proof.