[amszmidt]

It isn't the difficult, a license that forbids how the program is used is a non-free software license.

"The freedom to run the program as you wish, for any purpose (freedom 0)."

[Orygin]

Yet the GPL imposes requirements for me and we consider it free software.

You are still free to train on the licensed work, BUT you must meet the requirements (just like the GPL), which would include making the model open source/weight.

[helterskelter]

Running the program and analyzing the source code are two different things...?

[amszmidt]

In the context of Free Software, yes. Freedom one is about the right to study a program.

[LtWorf]

But training an AI on a text is not running it.

[tpmoney]

And distributing an AI model trained on that text is neither distributing the work nor a modification of the work, so the GPL (or other) license terms don't apply. As it stands, the courts have found training an AI model to be a sufficiently transformative action and fair use which means the resulting output of that training is not a "copy" for the terms of copyright law.