← Tool guides

AI Tools for Screenplay & Story

What each tool actually does, our verdict, and our source and verification date -- no referral links.

Zero referral links and zero paid placement in this guide -- every verdict below is our own editorial judgment, and every card carries a real last-verified date from its official source.

Tool Verdict Last verified
Sudowrite Crosses the authenticity line 2026-09-10
Celtx Allowed 2026-09-10
ChatGPT Allowed with disclosure 2026-09-10
Sudowrite
Crosses the authenticity line

The same writing tool listed in the Scenic Writing guide, also used for screenplay/story development via its "Story Bible" feature, which walks from an idea to a chapter outline to a chapter draft.

Why this verdict? When Story Bible is used to draft actual scenes or dialogue that goes into the screenplay unedited, part of the work is the model's authorship, not the writer's -- crossing the line unless disclosed.

Official source ↗ Last verified: 2026-09-10
Celtx
Allowed

Screenwriting-format and production-planning software: professional formatting, storyboards, scene breakdowns, shot lists -- with no AI text-generation feature found on its official page as of this check.

Why this verdict? A pure organization/formatting tool, no generation -- every word in the screenplay is the user's own.

Official source ↗ Last verified: 2026-09-10
ChatGPT
Allowed with disclosure

OpenAI's general-purpose conversational assistant: it answers, summarizes, and brainstorms plot or character ideas -- and can also write a complete screenplay passage if asked to directly. Free tier; Plus at $20/month; Pro at $200/month (the official page blocks direct automated fetch; pricing confirmed via live search of openai.com pages on the verification date).

Why this verdict? Using it to brainstorm a plot point or critique an existing draft stays within the line and needs only a simple disclosure. Asking it to "write the whole scene for me" means part of the work was not written by you -- exactly what our own red line forbids for our products, and what we recommend against here too.

Official source ↗ Last verified: 2026-09-10