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The current state of the theory that GPL propagates to AI models

shujisado.org

51–60 of 314 posts

Re: The current state of the theory that GPL propagates to AI models

#51
post #32

We need a new license that forbids all training. That is the only way to stop big corporations from doing this.

Would such a license fall under the definition of free software? Difficult to say. Counter-proposition: a license which permits training if the model is fully open.

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)."

Re: The current state of the theory that GPL propagates to AI models

#52

We need a new license that forbids all training. That is the only way to stop big corporations from doing this.

Wouldn't it be still legal to train on the data due to fair use?

I don't think it's fair use, but everyone on Earth disagree with me. So even with the standard default licence that prohibits absolutely everything, the humanity-1 consider it fair use.

Re: The current state of the theory that GPL propagates to AI models

#53

[flagged]

As somebody who thinks that people currently own the code that they write, I wonder why you're in people's business who want to write GPL'd software. Are you complaining about proprietary software? I hear the restrictions are a lot tighter for Photoshop's source code, or iOS's, but for some reason you are one of the people who hate GPL as a hobby. Please don't show up whining about "spirits" when Amazon puts you out…

I'm not in anyone's business just sharing my opinion on GPL. I understand why people go GPL / AGPL just not for me. To each their own if they want to go down that path.

Re: The current state of the theory that GPL propagates to AI models

#54
post #32

We need a new license that forbids all training. That is the only way to stop big corporations from doing this.

Would such a license fall under the definition of free software? Difficult to say. Counter-proposition: a license which permits training if the model is fully open.

Model weights, source, and output.

Re: The current state of the theory that GPL propagates to AI models

#55
post #37

Earlier quoted context omitted.

My next project will be released under a GPL-like license with exactly this condition added. If you train a model on this code, the model must be open source & open weights

Not sure why the FSF or any other organization hasn't released a license like this years ago already.

Because it would violate freedom zero. Adding such terms to the GNU GPL would also mean that you can remove them, they would be considered "further restrictions" and can be removed (see section 7 of the GNU GPL version 3).

Re: The current state of the theory that GPL propagates to AI models

#56
post #11
post #2

The article repeatedly treats license and contract as though they are the same, even though the sidebar links to a post that discusses the difference. A lot of it boils down to whether training an LLM is a breach of copyright of the training materials which is not specific to GPL or open source.

To my understanding, if the material is publicly available or obtained legally (i.e., not pirated), then training a model with it falls under fair use. Once training is established as fair use, it doesn't really matter if the license is MIT, GPL, or a proprietary one.

That is just the sort of point I am trying to make. That is a copyright law issue, not a contractual one. If the GPL is a contract then you are in breach of contract regardless of fair use or equivalents.

Re: The current state of the theory that GPL propagates to AI models

#57

I might be crazy, and I'd love to hear from somebody who knows about this, but I've been assuming that AI companies have been pulling GPL code out of the training material specifically to avoid this. Corporations have always talked about the virality of GPL, sometimes but not always to the point of exaggeration, you'd think that after getting the proof of concept done the AI companies would be running away at full sp…

> I might be crazy, and I'd love to hear from somebody who knows about this, but I've been assuming that AI companies have been pulling GPL code out of the training material specifically to avoid this.

Haha no.

https://windsurf.com/blog/copilot-trains-on-gpl-codeium-does...

And just in the last two days, AI generating LGPL headers (which it could not do if identifying LGPL code was pulled from the codebase) and misattributing authors:

https://devclass.com/2025/11/27/ocaml-maintainers-reject-mas...

Re: The current state of the theory that GPL propagates to AI models

#58
post #41

We need a new license that forbids all training. That is the only way to stop big corporations from doing this.

To my understanding, if the material is publicly available or obtained legally (i.e., not pirated), then training a model with it falls under fair use, at least in the US and some other jurisdictions. If the training is established as fair use, the underlying license doesn't really matter. The term you added would likely be void or deemed unenforceable if someone ever brought it to a court.

This is at least murky, since a lot of pirated material is “publicly available”. Certainly some has ended up in the training data.

Re: The current state of the theory that GPL propagates to AI models

#59
post #50
post #4

Earlier quoted context omitted.

And the current norm that the trillion dollar companies have lobbied for is that you can train on copyrighted material all you want so that's the reality we are living in. Everything ever published is all theirs.

I am really surprised that media businesses, which are extremely influential around the world, have not pushed back against this more. I wonder whether they are looking at cost savings that will get from the technology as a worthwhile trade-off.

They're busy trying to profit from it rushing to enter into licensing agreements with the LLM vendors.

Re: The current state of the theory that GPL propagates to AI models

#60
post #41

We need a new license that forbids all training. That is the only way to stop big corporations from doing this.

To my understanding, if the material is publicly available or obtained legally (i.e., not pirated), then training a model with it falls under fair use, at least in the US and some other jurisdictions. If the training is established as fair use, the underlying license doesn't really matter. The term you added would likely be void or deemed unenforceable if someone ever brought it to a court.

I wouldn't say this is settled law, but it looks like this is one of the likely outcomes. It might not be possible to write a license to prevent training.
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