Developer Builds AI Upscaling API Using Six Specialist Models for Different Image Types

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A developer built UpRes, an AI image upscaling service that uses six specialized models instead of a single general-purpose one, after finding that models trained on one image type performed poorly on others. The six models — Flare, Prism, Lumen, Mirage, Motion, and Motion X — are each optimized for a specific category such as photos, AI-generated art, portraits, illustrations, and video. The service runs on a single API endpoint, processes most jobs in 15–25 seconds on GPU hardware, and returns a URL to the upscaled output. Video upscaling proved significantly more complex than images, with the Motion X model alone taking three months to develop due to the challenge of maintaining consistency across frames. UpRes is available via a web interface, CLI tool, and public API, with a free tier offering five images at no cost and no credit card required.

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ProgrammingDEV Community ·

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