Best AI Image Upscaler Comparison 2026: Real Quality Tests
We tested 10 popular AI image upscalers head-to-head with real images. See which tool produces the best results for photos, AI art, and illustrations.
The Test Methodology
We used 5 different image types across 10 popular upscalers:
Each tool was tested at 4x upscaling with default settings.
The Contenders
Free Options
Paid Options
Results Summary
Best Overall Quality
Topaz Gigapixel and ImageUpscaler tied for best overall quality across all image types. The difference between them was minimal in blind tests.
Best for AI Art
ImageUpscaler performed best for Midjourney and Stable Diffusion images, likely because its training data includes more AI-generated content.
Best for Anime
Waifu2x remains the gold standard for anime-style content, though ImageUpscaler came very close with its latest model.
Best Value
ImageUpscaler offers the best quality-to-price ratio. Free tier is genuinely usable with no watermarks, and the Pro plan at $4.99/week is significantly cheaper than competitors.
Best for Professionals
Topaz Gigapixel wins for professionals who need offline processing, batch automation, and Lightroom/Photoshop integration.
Our Recommendation
For most users, ImageUpscaler is the best choice in 2026. It matches Topaz quality without requiring a $199 purchase or desktop software installation. The free tier is generous enough for casual users, and the Pro plan is affordable for professionals.
Try ImageUpscaler free — upload your own image and compare the results yourself.
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