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STORM vs SurfSense: catalog facts
STORM	SurfSense
Free Free and open source; language model and search API costs are your own.	Free Free and open source to self-host.
Command line	Web, Self-hosted
Produces long, cited reports from a single topic Multi-perspective questioning for broader coverage	Can run air-gapped with your data kept private Answers questions over your own documents and connected sources
Needs Python setup and API keys for models and search A research project, with limited polish for everyday users	Requires setting up and maintaining your own server Fast pace of change can mean frequent updates
Downloadable app	Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	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.