Can You Use AI to Write a Screenplay? The Rules That Actually Apply

Two separate rulebooks govern this question and they answer different things. The WGA Minimum Basic Agreement decides what happens to your credit. US copyright law decides what you actually own. You can be fully protected under one and exposed under the other.

Does using AI cost you your screenwriting credit?

No — not on an MBA-covered project. The 2023 WGA MBA establishes that neither traditional AI nor generative AI is a writer, so no written material produced by AI can be considered literary material. It separately provides that AI-generated material is not source material.

Those two provisions do the real work. Credit and separated rights are determined by who contributed literary material against what source material existed. If AI output can be neither, it cannot mathematically reduce your position. A company cannot hand you an AI-generated draft, call it source material, and downgrade you from "Written by" to "Screenplay by" on that basis.

Can a studio make you use AI?

No. The MBA is explicit that a company cannot require a writer to use AI software when performing writing services. A writer may choose to use it, provided the company consents and the writer follows applicable company policies.

Read that structure carefully, because it is symmetrical rather than permissive: you cannot be forced to use it, and you also cannot unilaterally decide to use it on a covered project without the company agreeing. Consent runs both ways.

Do you have to be told if what you were handed is AI-generated?

Yes. The company must disclose to the writer if any materials given to them were generated by AI or incorporate AI-generated material.

This is the most practically useful provision and the least discussed. Without it, you would have no way of knowing whether the "existing draft" you were hired to rewrite carried the credit implications of source material. The disclosure obligation is what makes the source-material protection enforceable rather than theoretical.

The WGA has also reserved the right to assert that exploiting writers' material to train AI is prohibited under the MBA or other law — an open question rather than a settled protection.

Can you copyright a screenplay written with AI?

Partly, and this is where the second rulebook diverges sharply from the first.

The US Copyright Office's position, set out in its March 2023 registration guidance and developed in the January 2025 Part 2 report on copyrightability, is that human authorship remains essential. Works generated entirely by AI are not copyrightable. Works combining human and AI-generated elements can be registered, but protection extends only to the human-authored portions.

The finding writers most often get wrong: providing prompts, even detailed ones, does not constitute human authorship. Iterating on a prompt until the output is good is not, on the Office's analysis, the same as writing.

Human contribution is assessed case by case rather than by a bright-line rule. By April 2026 the Office had registered more than 6,000 works involving both human and AI contribution, so this is a working process, not a prohibition.

What does this mean in practice?

Four things follow, and they are mostly about record-keeping rather than principle.

1. Know whether your project is MBA-covered. These credit protections attach to WGA signatory work. An independent, non-signatory feature is governed by whatever your contract says — which is usually nothing about AI unless you put it there.
2. Keep your drafts. If the copyright question ever matters, the evidence that the human authorship is yours is your version history. This is one of the underrated arguments for writing in a plain-text, version-controllable format like Fountain rather than a binary file you overwrite.
3. Disclose on registration. Registering a mixed work means telling the Office what is AI-generated. Getting this wrong is a registration problem, not a creative one.
4. Do not assume prompts are ownership. If the protectable core of your screenplay was generated rather than written, you may have a script you cannot fully control — which matters enormously the moment anyone wants to buy it.

How does this compare to the performer side?

Different agreements, similar shape. The performer protections in the 2026 SAG-AFTRA AI deal work through consent and disclosure in much the same way, and California's AB 2602 and AB 1836 add statutory backing for likeness. Writers got their version first, in 2023.

For where the technology is actually being used across the rest of the pipeline — as opposed to what it is permitted to do — see AI in film production. And if you are writing on spec rather than on assignment, what a spec script is actually for in 2026 covers what the document has to accomplish now.

Write it in a format that keeps the history legible. Screenwriting on ScenePaper uses Fountain with revision tracking built in, and the free screenplay template gets the formatting right at no cost.