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Spline vs Sketchfab: catalog facts
Spline	Sketchfab
Freemium Free tier available; paid plans unlock additional features.	Freemium Free to join, with paid plans for creators and businesses.
Web	Web
Real-time collaboration built directly into a 3D tool Runs in the browser with no install needed	Interactive 3D viewer that runs in any browser Embeddable on other websites
Advanced features and export options require a paid plan Browser performance can limit very complex scenes	Uploading and publishing require an account Model marketplace has moved to Fab
Web application	Web application, Hosted service
Closed source	Closed source
License not stated	License: Proprietary
Not stated if an account is needed	Not stated if an account is 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 October 2, 2026

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