FSF statement on copyright infringement lawsuit Bartz v. Anthropic
https://www.fsf.org/blogs/licensing/2026-anthropic-settlement(Edit: In the event of it being changed to match the actual article title, the current subject line for this thread is " FSF Threatens Anthropic over Infringed Copyright: Share Your LLMs Freel")
FSF licenses contain attribution and copyleft clauses. It's "do whatever you want with it provided that you X, Y and Z". Just taking the first part without the second part is a breach of the license.
It's like renting a car without paying and then claiming "well you said I can drive around with it for the rest of the day, so where is the harm?" while conveniently ignoring the payment clause.
You maybe confusing this with a "public domain" license.
I used to be on the FSF board of directors. I have provided legal testimony regarding copyleft licenses. I am excruciatingly aware of the difference between a copyleft license and the public domain.
The restrictions fall not only on verbatim distribution, but derivative works too. I am not aware whether model outputs are settled to be or not to be (hehe) derivative works in a court of law, but that question is at the vey least very much valid.
> the district court ruled that using the books to train LLMs was fair use but left for trial the question of whether downloading them for this purpose was legal.
Licences like AGPL also don't have redistribution as their only restriction.