Securing large language model output by propagating permissions

A computer-implemented method for securing output from one or more nondeterministic models, the computer-implemented method comprising, by one or more hardware processors executing program instructions:

• receiving, from a user and via one or more graphical user interfaces, one or more user inputs including at least:
• a first user input providing at least a portion of a first prompt for a query for a first nondeterministic model;
• and
• in response to receiving the one or more user inputs:
• executing the query, by the first nondeterministic model, to generate an output;
• determining a first one or more data inputs used, or to be used, by the first nondeterministic model during execution of the query;
• determining a first set of permissions associated with the first one or more data inputs;
• and
• applying a second set of permissions to at least a first portion of the output based on the first set of permissions.