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SurfSense vs FastGPT: catalog facts
SurfSense	FastGPT
Free Free and open source to self-host.	Free Free to self-host; the repository also references separate pro components.
Web, Self-hosted	Web, Self-hosted
Can run air-gapped with your data kept private Answers questions over your own documents and connected sources	Knowledge-base Q&A with RAG retrieval Visual AI workflow editor
Requires setting up and maintaining your own server Fast pace of change can mean frequent updates	Licence terms are not stated in the research Some features live in separate pro components
Self-hosted	Self-hosted
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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