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 widely reported AI image registration shows the line — it came after repeated hands-on editing and a video of the whole process. The copyright covers the arrangement, not the generated material.
- Read your own tool's terms. Midjourney’s terms say you own what you make “to the fullest extent possible under applicable law”, with some exceptions. The one tied to a plan: companies over $1m in revenue must be on Pro or Mega to own their assets. There is no free plan either — no free trial on its website or in Discord — so in practice the way in is a paid plan.Midjourney, Terms of Service, version effective 27 May 2026, read at source 23 Sep 2026: “You own all Assets You create with the Services to the fullest extent possible under applicable law. There are some exceptions:”First-hand: until 23 Sep 2026 this line said “Midjourney grants ownership to paid members only”. The terms in force since 27 May 2026 set no such condition; the only plan-related exception is the $1m revenue rule.
- 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, read at source 23 Sep 2026: copyright can protect “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 widely reported registration in the United States shows where the line sits: "A Single Piece of American Cheese", accepted by the Copyright Office in early 2025.
It was refused first. It was granted on reconsideration after the Office reviewed a video showing the applicant’s whole process — a generated starting image, then repeated inpainting, each pass a deliberate choice about what to change and where. The Office found enough human authorship in how the AI-generated material was selected, arranged and coordinated.
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, as reported by the Harvard Journal of Sports and Entertainment Law, 24 Mar 2025, read at source 17 Sep 2026. It reports the Office acting “After initially denying the copyright claim”, says of the Office’s letter that “the Copyright Office described that it reviewed the video showing in full the graphic interface that Keirsey used, including his selection of component parts and his revised prompts”, and dates the acceptance: “In February, the Copyright Office accepted an application for copyright registration in an artwork titled A Single Piece of American Cheese.” An earlier version gave a registration date of 30 January 2025, a refusal in September 2024 and a quoted phrase from the registration; none of those is in this source, the public record at publicrecords.copyright.gov was not read here, and they were removed. It also called this the one AI image registered in the US, which no source here supports. The draft of this page said "roughly 35 inpainting edits"; the edit count appears in no retrievable source and was removed before publication.
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 practical end of the provenance question. 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, in the version effective 27 May 2026, say: “You own all Assets You create with the Services to the fullest extent possible under applicable law.”Midjourney, Terms of Service, section 4, Content Rights, read at source 23 Sep 2026.First-hand: until 23 Sep 2026 this line said the terms gave that ownership to “paying subscribers”. They do not say that.
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 things 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, worth reading beside what generation actually costs.
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", early 2025, as reported by the Harvard Journal of Sports and Entertainment Law · Midjourney Terms of Service and Free Trials page. Checked 28 August 2026; the registration re-read 11 and 17 September 2026, the Midjourney trial 17 September 2026, and the Midjourney terms and trial page again 23 September 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.