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Radiant Photo vs Topaz Photo: catalog facts
Radiant Photo	Topaz Photo
Paid Paid software with a free trial that needs no credit card and a 30-day money-back…	Paid Paid; included in the Topaz Studio subscription at $399 per year.
Windows, macOS	Windows, macOS
Automatic corrections based on lighting, subject and background Processing stays local with no cloud upload	Denoise, sharpen, unblur and upscale in one application Models can run locally or in the cloud
Paid product after the trial Less manual control than a full RAW developer or image editor	Paid software with no free tier stated Processing options vary by model
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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