While you cannot build new models for free, you can run models built by others using the COMSOL Runtime
Searching for "COMSOL free license" often leads to torrents or keygens. comsol multiphysics free license
used to run simulation applications created by others through a COMSOL Server™. While you cannot models from scratch, you can run pre-made apps for free. Student Versions While you cannot build new models for free,
: This is a free tool that allows you to connect to and run simulation applications on a COMSOL Server™. While it doesn't let you build models from scratch, it allows you to run pre-built apps provided by your organization or peers. Student Versions : This is a free tool
for full commercial or academic use, there are legitimate ways to access the software for free or at a significantly reduced cost for specific purposes. The Myth of the "Free" Full License