Where Does Jan Store Models and Data?
Jan app data folder with downloaded models, threads and settings.
Last updated
Jan downloads open-weight models and keeps threads, settings and extensions in a per-OS app-data folder, with multi-gigabyte model blobs dominating disk use. Clearing space starts here, not in chat history.
Move or symlink the models subfolder before drives fill. Threads are tiny JSON; model weights are the disk hogs.
Where Jan stores this, by platform
%APPDATA%\Jan\data
Holds models, threads and settings.json on desktop installs. Models subfolder eats gigabytes; move it first when freeing space. Quit Jan before moving trees.
~/Library/Application Support/Jan/data
macOS equivalent with the same models and threads layout. Same quit-before-move rule.
~/.config/Jan/data
Linux config-tree data folder. Flatpak builds redirect under ~/.var/app instead.
Frequently asked questions
Why is Jan using so much disk?
Downloaded model weights in the data folder above. Delete unused models from inside the app to prune safely.
How do I back up Jan chats?
Copy the threads subfolder inside the path above. Models can redownload; conversations cannot.
Notice an outdated path? Let us know.