Comment by KallDrexx

When you write code by hand, you are the author. As part of your contract with your employer you grant copyright and authorship to your employer by default (as stated in the contract).

The LLM is not employed by you or your employer, because you can't enter contracts with non human or non human organizations.

When you license a non-LLM code generation service (like a page that creates a website for you), that company owns the copyright of the generated website because their deterministic system generated code by defined rules and mechanisms that were defined by the code generation system. Assuming no LLM as part of that, there is no code that is generated by the system outside of the rules that they defined (it's not filling in the blanks that you or the code generation system didn't explicitly define).

Since they own the copyright of the website, they can then assign the copyright and authorship to you because of your license agreement to them.

Since the LLM is filling in the blanks on its own in undefined ways, it is the author and not Anthropic/OpenAI/ETC. That means that even though you have a license agreement with Anthropic/OpenAI/etc.. to transfer copyright, they didn't have copyright/authorship, the LLM did. And since the LLM can't legally own copyright/authorship (since it isn't a human) then it can't grant it to you and you can't then grant it to your employer.