kitio.aiNightmare AI vs WaifuXL
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. WaifuXL is completely free, while Nightmare AI is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Image upscaling to 4K
- Old photo restoration
- Anime upscaler
- Image enhancer
- Ghibli-style conversion
- Anime image upscaling
- Character detection
- Descriptor tagging
- Download or copy to clipboard
| Feature | Nightmare AI | WaifuXL |
|---|---|---|
| Best for | Upscale, sharpen and restore photos and anime images online | Free browser-based upscaler and tagger for anime-style images |
| Category | Image | Image |
| Pricing model | Freemium | Free |
| Starting price | $10/mo | Free |
| Free plan | Yes | Yes, fully free |
| Made by | Nightmare AI | WaifuXL |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
WaifuXL is completely free, while Nightmare AI is freemium.
Free plan
Cheapest paid plan
Top plan
Free trial
2 plans
Basic
$10/mo
- 100 credits
- Upscale to 2K and 4K
- Restore old photos
- No ads
Standard
$20/mo
- 300 credits
- Everything in Basic
Prices in USD, checked Oct 29, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Nightmare AI
- Handles photos and anime or cartoon art
- Free try without installing anything
- Yearly plans cut the price
- Credits cap the number of upscales
- Free output limits not clearly stated
- Only handles JPG, PNG and WebP
WaifuXL
- Completely free
- No account needed
- Tags characters as a bonus
- Only suited to anime-style images
- No batch processing
- Few settings to adjust
Which one should you choose?
Choose Nightmare AI if you want:
- Handles photos and anime or cartoon art
- Free try without installing anything
- Yearly plans cut the price
Watch out: credits cap the number of upscales.
Choose WaifuXL if you want:
- Completely free
- No account needed
- Tags characters as a bonus
Watch out: only suited to anime-style images.
Nightmare AI vs WaifuXL FAQ
What is the difference between Nightmare AI and WaifuXL?
Nightmare AI: Upscale, sharpen and restore photos and anime images online. WaifuXL: Free browser-based upscaler and tagger for anime-style images. Both are image tools.
Is Nightmare AI or WaifuXL cheaper?
WaifuXL is completely free, while Nightmare AI is freemium.
Do Nightmare AI and WaifuXL have free plans?
Nightmare AI: Yes. WaifuXL: Yes, fully free.
Who makes Nightmare AI?
Nightmare AI is made by Nightmare AI.
Who makes WaifuXL?
WaifuXL is made by WaifuXL.
Which should I choose, Nightmare AI or WaifuXL?
Choose Nightmare AI if you value handles photos and anime or cartoon art and free try without installing anything. Choose WaifuXL if you value completely free and no account needed.