Two different questions get answered as if they were one. Can you sell it is usually yes. Do you own it is usually no. Here is where the line actually falls.
- The tool's permission and copyright are different things. A vendor can let you sell what you make. Only the law can make it yours, and it mostly does not.
- Prompting is not authorship. However long and specific the prompt, the US Copyright Office does not treat writing one as making you the author of the result.
- The Supreme Court left that in place on 2 March 2026 by declining to hear the case.
- One AI image has been registered — after repeated hands-on editing and a video documenting every step. The copyright covers the arrangement, not the generated material.
- Read your own tool's terms. Midjourney grants ownership to paid members only — and it has had no free tier since 2023, so there is no unpaid route in. Companies over $1m in revenue must be on a higher plan to own their assets.
- The practical position: you can almost certainly sell it. You probably cannot stop anyone else using something near-identical.
The two questions people merge
Someone generates an image and asks "is it mine?" Inside that are two separate questions with different answers, decided by different people.
The gap between those two rows is where people get hurt. A vendor saying "you own the output" reads like the second answer. It is only ever the first.
A licence is permission to use. Copyright is the power to stop others. Most AI output comes with the first and not the second.
What the law actually says
Human authorship is the requirement
The US Copyright Office position is that human authorship is an essential part of a valid copyright claim. Material generated by a machine, without a human author, is not registrable.
This was tested and it held. In Thaler v. Perlmutter — an image entered for registration with no human author claimed at all — the Supreme Court declined to take the case on 2 March 2026, leaving the Copyright Office's refusal and the DC Circuit's agreement with it standing.US Copyright Office, "Copyright Registration Guidance: Works Containing Material Generated by Artificial Intelligence", Federal Register, effective 16 Mar 2023, which states that copyright protects "only material that is the product of human creativity" and that "author" in the Copyright Act "excludes non-humans"; Thaler v. Perlmutter, certiorari denied 2 Mar 2026. Checked 28 Aug 2026
A long prompt does not make you the author
The instinct is that a detailed prompt is the creative act. The Office does not agree. Text prompts, however elaborate, do not by themselves make you the author of the output. The reasoning is that you described a result; you did not execute it, and you could not predict precisely what would come back.
This is the single most misunderstood point in the whole subject. Prompt craft is a real skill. It is not, on this reading, authorship.
What does count: the cheese
One AI image has been registered in the United States. "A Single Piece of American Cheese", registered 30 January 2025.
It was refused first, in September 2024. It was granted on reconsideration after the applicant supplied a video documenting every step of his process — a generated starting image, then repeated inpainting, each pass a deliberate choice about what to change and where. The Office registered it on the basis of the "selection, coordination, and arrangement" of the AI-generated material.
Read that wording carefully. The protection attaches to the selection and arrangement — the human decisions — and not to the generated material underneath. Someone else generating similar raw output is not infringing anything.US Copyright Office registration of "A Single Piece of American Cheese", applicant Kent Keirsey of Invoke, granted 30 Jan 2025 after refusal in Sept 2024; public record at publicrecords.copyright.gov. The draft of this page said "roughly 35 inpainting edits" and transposed the Office's wording. The edit count appears in no retrievable source and has been removed; the quoted phrase is "selection, coordination, and arrangement". Both fixed before publication. Checked 28 Aug 2026
The more you did after the model finished, the more there is to own. A one-shot generation gives you nothing to claim. A composition you assembled, edited, arranged and revised gives you something — and what you own is that layer, not the pixels the model produced.
Which leads to an unglamorous piece of advice: if the work matters, keep the evidence of your process. The cheese was registered because its author could show the work, not because he asserted it.
What the tools grant — and what they carefully do not
Every vendor has a clause about ownership. They are not the same, and none of them can override the section above.
Midjourney, as a worked example
Their terms say paying subscribers "own all Assets You create with the Services to the fullest extent possible under applicable law."
That last clause is doing the work. Applicable law, per the Copyright Office, gives you very little in purely generated material. The sentence is accurate and it is also much smaller than it sounds.
Two conditions worth knowing:
The pattern across vendors
Vendors differ in detail but the shape repeats: paid tiers get commercial rights, free tiers often do not, and the grant is always framed as whatever the law allows. This is the same trap as hosting — a free plan that is free for personal use and not for anything that earns.
If money is involved anywhere in the chain, assume you need the paid tier, and check. The one thing you cannot do is infer one vendor's terms from another's.
So what can you actually do?
The Office requires you to say which parts are human and disclaim the AI-generated parts. This is not a technicality: the guidance states that failing to disclose AI-generated material risks the registration being cancelled.
If you have already registered something without disclosing the AI involvement, the route back is a supplementary registration correcting the record.
Before you sell anything
US Copyright Office registration guidance, Federal Register, 16 March 2023 (copyright.gov/ai/ai_policy_guidance.pdf) · Thaler v. Perlmutter, Supreme Court certiorari denied 2 March 2026, leaving the DC Circuit decision standing · Copyright Office registration of "A Single Piece of American Cheese", 30 January 2025 · Midjourney Terms of Service. All checked 28 August 2026.
This is United States law, and it is not settled everywhere else. Other jurisdictions take different views on machine-made work, and this page does not attempt to summarise them. It is also not legal advice — it is a description of published positions, with the dates attached so you can check whether they still hold.
The honest summary: the tools will let you sell it, the law will not let you fence it, and the only part that is really yours is the part you did yourself.