Mito is licensed [1] under the AGPL liscence. The TLDR of the license is that you can use, distribute, and modify Mito for free, but any modifications that you make need to be shared back with the Mito community.
There is an additional version of Mito, Mito Pro, that is licensed under a different license that provides access to advanced functionality only if you are paying for a Mito Pro / Enterprise subscription.
[1] https://github.com/mito-ds/monorepo/blob/dev/LICENSE [2] https://github.com/mito-ds/monorepo/blob/dev/mitosheet/src/p...