Best AI to turn a book into an animated movie: 14 tools compared (2026)

The best AI to turn a book into an animated movie is one that reads your text, not a prompt, and keeps the same characters for the whole film. Nima's Long-form Video takes up to 10,000 words at a time, about an hour of film, and films the text as written, with a voice per character. MagicLight takes a chapter of up to 12,000 characters and offers 30 or 50 minute videos; LongStories.ai, Atlabs and Mootion make story videos of 10 to 20 minutes; OpenArt Director makes up to five. Clip tools such as Kling, Runway and Google Flow make 10 to 30 seconds at a time, and Vyond, Animaker and Steve AI animate with template characters. We make Nima, so weigh our view accordingly; every fact about the other tools was read on the company's own site on 23 October 2026.

Your first trailer is free.

Last updated 23 October 2026

The short version

We have not tested every tool here. The descriptions are what each company says about its own product, and the prices are monthly prices billed monthly, as printed on its site on the day we looked, unless the table says otherwise. Check before you buy.

What turning a book into a film takes

Four things separate a film of your book from a video loosely inspired by it:

• The tool reads your text. A chapter goes in as a chapter, not squeezed into a prompt. Most tools here do not say how much text they take; the ones that do are Nima (10,000 words), MagicLight (12,000 characters), Vyond (a 4,000-character prompt) and Kling (8,000 tokens).
• The film follows it. Your dialogue, spoken by the character who says it, and your narration between.
• The cast holds. The same faces, places and voices from the first scene to the last. How each tool keeps a character.
• The length fits the book. At about 150 words a minute with a narrator, a chapter of 1,500 to 3,000 words is 10 to 20 minutes of film, and an 80,000-word novel is close to nine hours.

No tool here takes a whole novel in one go. The ones built for books go a chapter or a few chapters at a time, and a novel becomes a series.

Tools that read your story

Nima Long-form Video. Paste a story, a chapter or a script, from 150 to 10,000 words. Nima maps the scenes, the cast and the places, draws each character once from your descriptions as a sheet you approve, and gives that sheet to every shot. A narrator reads your prose and each character speaks their own lines, in a voice you pick from five auditions; spoken lines come only from your text, and nothing is cut unless you agree. You review the whole film as a storyboard with the voices before anything is animated. One upload is about an hour of film. The first trailer, 15 to 20 seconds, is free.

MagicLight. "Paste up to 12,000 characters of ordinary narrative writing" and it "creates videos of up to 50 minutes in length". A character you make is kept: "Use the same face and voice in the next story you upload". Its Standard plan, $15 a month, lists "Up to 110 min video generation" next to "Up to 230s image-to-video generation"; the pages we read do not say how the two fit together in one long video.

LongStories.ai. "Up to 15 minutes, from an idea or a script": 10 minutes a video on the $59 Pro plan, 15 on the $199 Creator Max plan, with a voice for the narrator and each character. Its series feature says "The next episode keeps your cast, voices and world." Generating a video needs a paid plan.

Atlabs. Built for kids' stories and cartoon series: "Paste your story directly", pick from "50+ styles including 3D cartoon, storybook, claymation, anime", and it "locks each element so everything stays consistent". Videos run up to 5 minutes on the $39 Pro plan, 10 on Plus and 20 on Max, with lip sync.

Mootion. "Create professional short or long-form animated videos (10+ mins)" from a prompt, a script or a document, with a Character Library of saved characters and narration synced to the animation. It is now paid only, from $15 a month.

OpenArt Director. You describe the story in a chat and it makes "videos up to five minutes long with no stitching", with saved characters and a voice for each.

LTX Studio. Upload a script as a .txt file and it is split into scenes and shots, with the characters, objects and places pulled out as reusable Elements. Shots run 3 to 20 seconds and are joined on a timeline. Saving Elements and AI storyboards needs the $35 Standard plan. A script in another language works, but "results will be translated to English".

InVideo AI. Turns a script or an idea into a shot-by-shot plan and generates from it, with stock footage in every plan; its agent "stores characters, locations, and visual rules in a project context". No maximum length is stated.

Template animation: Vyond, Animaker, Steve AI

These three make long videos, but from a library of animated characters and scenes built for business, training and explainers, with AI writing and voicing the script. They go long: Vyond to 25 minutes a video on its $99 Starter plan and up to 90 on larger ones, Animaker to 15 minutes on its $45 Starter plan and 30 on Pro, Steve AI to 100 minutes of video a month on its $29 Starter plan. Vyond and Animaker lip sync the characters. Their generated, non-template video is a small allowance: Animaker's Starter plan includes 90 seconds of it a month, and Vyond's generated clips run 4 to 5 seconds. The characters come from their libraries and character builders, in the house style.

Clip tools: Kling, Runway, Google Flow

These make the best-looking individual shots, a few seconds at a time, and leave the film to you. Kling 4.0 makes 3 to 30 seconds a clip with lip sync and up to 15 references; Runway makes 10-second clips and its Stitch app joins clips into one video "up to a total duration of 60 minutes"; Google Flow makes 8 to 10 seconds a clip and keeps a saved character's "face, clothing, and voice". A chapter of 3,000 words is about 20 minutes of film: 40 clips at 30 seconds, 120 at 10, each one written, generated and checked by you.

Questions to ask any tool before you paste your book

1. How much text does it take at once? If it is not stated, paste a whole chapter and see what comes back.
2. Does it keep my words? Check that the dialogue in the film is the dialogue in the book.
3. Does each character speak their own lines, in their own voice, the same voice every time?
4. Is the cast the same at the end as at the start, and in the next chapter?
5. What is the longest film on the plan I would buy? The longest film a tool advertises is often on its most expensive plan.

You need the right to adapt the text. Your own book qualifies, and so does anything in the public domain. If a publisher holds your film or audio-visual rights, ask them before you post a trailer.

What Nima costs

Films are made on a monthly plan metered in minutes of finished film: two, ten or a hundred minutes a month, with one, two or five rounds of notes on each film. Extra minutes are $10 each and never expire. That works out from as low as $10 per finished minute; the plans and their current prices are on the pricing page. Film length follows the text at about 150 words a minute with the narrator on.

The first trailer is free.