Copyright Office requires you to disclose AI involvement and disclaim the AI-generated parts. Zarya of the Dawn is the example — applicant filed for the whole graphic novel, got partial registration on the human-written text, refused on the Midjourney images. The reproducibility of the prompt isn't really the test. The test is whether a human made the expressive choices.

Zarya of the Dawn already settled it for Midjourney output: human-written elements were protected, AI-generated images were not. The character design didn't get copyright even though the human picked, prompted, and curated. Code isn't different. Prompting Claude to produce a function is closer to prompting Midjourney to produce a frame than to writing the function yourself.

The reason it feels different to engineers is that we're used to thinking of the compiler as the analogy. But a compiler is deterministic — same input, same output. An LLM isn't. That's the line the Copyright Office is drawing, and image cases got there first.