How we ranked these AI image upscalers
Each upscaler was placed on what matters when you enlarge an image: whether it can keep the original detail and faces as they are, the price of one upscale, what you can do free, how large the result can be, batch and API options, and what happens to the files you upload. Every price and limit was read on the maker's own pages on October 25, 2026 and carries its link. Only upscalers with a large public user base made the list.
Topaz Gigapixel is first because it covers the most cases well: faithful models for real photos, generative ones for damaged images, rendering on your own computer and unlimited upscales for a flat fee. LetsEnhance follows as the cheaper faithful option in the browser, and Upscayl as the free one on your own PC.
Faithful or creative: when faces change
Upscalers work in one of two ways. A faithful upscaler enlarges what is there and sharpens it; a creative upscaler redraws the image and invents detail that was never captured, such as pores, fabric weave or hair strands. Creative upscaling can make an AI image or a render look far richer, but it is also how faces and text change.
- Faithful modes: Topaz's Standard and High Fidelity models, LetsEnhance Prime and Gentle, Clarity AI's Crystal, Magnific Precision, Upscale.media, Bigjpg and Upscayl.
- Creative modes: Topaz Redefine, Wonder and Bloom, LetsEnhance Strong and Ultra, Clarity and Clarity Pro, Krea Enhance and Bloom, and Magnific Creative.
The makers say so themselves. Topaz's developer docs say its creative models can change identity, and Krea's enhancer page says a rebuilt face may not look like the person. In LetsEnhance's comparison with Magnific, both Magnific Creative and LetsEnhance's own Ultra mode distorted real faces even at the highest resemblance setting. For a photo of a real person, use a faithful mode, or keep creativity at its lowest.
Which kind of upscaler you need
- Real photos for print: Topaz Gigapixel or LetsEnhance, in a faithful mode. Clarity AI's Crystal goes largest, up to about 1.5 gigapixels.
- AI art, concept art and 3D renders: Magnific's Creative mode, Krea or Clarity Pro, where invented detail is the point.
- Anime, manga and illustrations: Bigjpg, or Upscayl's Digital Art model on your own PC.
- Free and private: Upscayl runs on your own graphics card and uploads nothing; Topaz Gigapixel also renders locally, for a subscription.
- An API in your own code: Clarity AI prices per output megapixel with no subscription, Topaz's API starts at $0.08 to $0.10 per faithful upscale, Krea sells Topaz upscales at $0.10, and LetsEnhance's runs through Claid.ai.
If your problem is that an AI image looks fake rather than too small, see our list of AI to real image converters.
What public comparisons show
No neutral test has put these upscalers side by side on the same images. The same-image comparisons that exist are run by vendors or by sites that earn affiliate commissions, and none publishes the settings used for every tool.
- LetsEnhance's January 7, 2026 guide ran one butterfly photo through six upscalers at 4x and judged its own result sharpest, Topaz Gigapixel very good but slightly softer, and Upscayl strong for a free tool. LetsEnhance ranks itself first.
- LetsEnhance's September 30, 2025 comparison with Magnific is the only same-image test with a real face: Magnific Creative produced badly distorted versions of the face in an old family photo, while Magnific Precision and LetsEnhance's Old Photo mode stayed close to the original.
- LetsEnhance's January 9, 2026 AI-art test found Topaz sharper with a slight contrast lift, Magnific Precision a modest sharpening, and Magnific Creative able to alter faces or objects.
- Bigjpg's October 24, 2026 comparison of twelve images found Bigjpg cleanest on anime line art at 4x and 8x, but strong noise reduction made a portrait's skin look painted. Two of the other tools tested are Bigjpg's own.
- Clarity AI's October 22, 2026 benchmark measures speed only: its Crystal model took about 2 seconds per 4K upscale on Replicate against about 8 for Topaz Standard V2. Clarity notes on the page that a speed test tells you nothing about quality.
- Kripesh Adwani's December 2025 roundup, which carries affiliate links, found Upscale.media clear on low-resolution and compressed images but weaker than PixelBin's own enhancer, and ImgUpscaler below the top tools and slower.
- Fast.io's May 2026 guide timed one 12-megapixel photo at 4x on an RTX 4070: about 45 seconds in Topaz Gigapixel and about 20 in Upscayl.
- Remini is a phone app from Bending Spoons that restores faces rather than an upscaler: it publishes no scale factor or output size, and its US App Store plan costs $9.99 a week, according to OpenTheRank's price tracker.
- ImgUpscaler (imgupscaler.com) enlarges only 2x or 4x and does not publish how many credits an upscale uses or its size limits; it has no API. It is easily confused with imgupscaler.ai, a different company's site.
For more image tools, see the most popular AI image editing apps by traffic.