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KoboldCpp vs WebLLM Chat: catalog facts
KoboldCpp	WebLLM Chat
Free Free and open source under the AGPL.	Free Free to use in the browser.
Windows, macOS, Linux	Web
A single executable with no installation and no external dependencies Runs on CPU or GPU, with partial offload for machines short on VRAM	Runs models locally in the browser with no install Conversations are processed without a server
You still have to find and download model files yourself Performance on CPU alone is slow for larger models	Requires a browser and GPU with WebGPU support Models must be downloaded before first use
Downloadable app	Web application
Open source	Closed source
License: AGPL-3.0	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 21, 2026	Official website Full listing and sources Checked October 1, 2026

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