Gigapixel vs ON1 Resize AI vs Aiarty: 4K upscaling

This review compares Aiarty Image Enhancer 3.11, ON1 Resize AI 2026 and Topaz Gigapixel 1.2 with its Wonder 3 model. The speaker prioritizes software that runs locally without internet access and offers perpetual licensing, but includes subscription-only Topaz for comparison.

Each test image is enlarged to 4K using Aiarty's More Detail version 3, ON1's highest-quality model or Wonder 3. The speaker enables face restoration for images containing people. Tests cover an 800 × 500 building photo, a portrait, a 600 × 1,000 wildlife image and a photo with small, low-quality faces.

The reviewer finds similar results on the building photo, with a slight preference for Topaz's textures. Topaz also earns the strongest assessment for portrait detail and small faces. ON1 comes close on lion fur and handles the final face test better than Aiarty. Aiarty leaves visible artifacts and an arm the speaker considers unrealistic.

The speaker recommends Topaz for detail but criticizes its processing speed and subscription requirement. ON1 is the second choice, particularly for wildlife. Aiarty receives praise for its interface and speed, with reservations about extremely small faces. The review also notes that standalone ON1 Resize supports batch processing, while the version built into ON1 Photo RAW 2026 does not.