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Real-ESRGAN vs Clarity AI: catalog facts
Real-ESRGAN	Clarity AI
Free Free and open source under the BSD-3-Clause license.	Freemium Pricing details are not covered here; check the site for current plans.
Windows, macOS, Linux, Command line	Web
Dedicated model variants tuned for anime versus photo content BSD-licensed and widely reused inside other tools and GUIs	Choice between faithful and creative upscaling Handles both images and video
Core project is a command-line library rather than a polished GUI app No repository update reflected since mid-2024	Requires an account Pricing not shown on the homepage
Downloadable app, Self-hosted	Web application, Hosted service
Open source	Closed source
License: BSD-3-Clause	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.