Notebook AI

What is Notebook AI?

Notebook AI is a browser-based worldbuilding planner that stores characters, locations and items as guided pages grouped into separate universes. It lives at notebook.ai and should not be confused with Google’s NotebookLM, which summarises research documents.

Every page type asks targeted questions, such as a character’s family or appearance. Answering them as you go makes gaps in a setting visible before they turn into plot holes. Pages can also be linked, so a character profile can point to related places and items elsewhere in the same universe.

The project is open source on GitHub under an MIT licence and is credited to developer Andrew Brown, who started it in 2016. The official homepage listed current Starter and Premium plans on our October 2026 visit, so the service remains active ten years on.

Key Features

Guided question pages do most of the work in Notebook AI, turning a loose idea into a filled-in profile you can link to the rest of your world.

• Guided templates: Each page type, from characters to countries, cities, landmarks and items, opens with a set of specific questions to answer. You can skip prompts that do not matter, so a minor shopkeeper stays brief while a lead character receives a full profile.
• Separate universes: Pages are grouped into universes, and focusing on one filters the others out of view automatically. The free Starter plan allows five universes, enough for most hobby writers juggling a main project and a few side ideas.
• Built-in document editor: A writing editor lets you draft chapters or session notes in the same account as your world notes. The site pitches searchable notes and continuity checks alongside it, so names and details can be confirmed without hunting through another file.
• Writing analysis: An optional analysis tool scores a document for readability, style and emotional tone. The privacy policy says it runs on IBM Watson and is opt-in for Premium members, so nothing is analysed unless you ask for it.
• Shared universes: Invited collaborators can view and edit every page inside a universe you share with them. This suits co-authors and tabletop groups, although the site describes no lighter, read-only permission level for individual pages.
• Premium extras: Premium adds timelines for ordering events, collections for grouping pages and 25 further page templates beyond the core set. Unlimited universes and a larger image allowance, reported by directories as 10GB, arrive with the same upgrade.

Pros

Unlimited characters on a free plan make Notebook AI easy to recommend, since many hobby writers will never need to pay.

• Generous free tier: Starter costs nothing and still allows unlimited characters, locations and items across five universes. Writers testing a first novel or a single campaign can work for months before any limit, apart from 50MB of images, gets in the way.
• Prompts better thinking: Question-led pages surface details you may not have considered yet, such as family ties or physical description. That structure helps writers who freeze in front of a blank wiki page and want a checklist to work through.
• Private by default: New pages stay hidden unless you decide to publish them, the site promises no adverts, and it says it never claims ownership of your writing. Authors planning unpublished manuscripts can work without early ideas being visible to strangers.
• Open source code: The full application is published on GitHub under the permissive MIT licence. Technical users can inspect how data is handled, and a public repository offers some reassurance about the project’s long-term continuity.
• Modest Premium price: Premium is listed at $9 a month, with lower effective rates on longer billing terms. For that sum you gain timelines, unlimited universes and extra templates, which is reasonable value for dedicated worldbuilding software.

Cons

Form fatigue is the real risk with Notebook AI, because the many fields on each page can absorb more time than the story itself.

• Busy interface: Long template pages with many prompts can feel heavy during the first few sessions. Our advice is to answer only the questions that matter to your plot and leave the rest until they become relevant.
• Global field edits: Changing a template field affects every page of that type, not just the one you are editing. Writers who want a single unusual character sheet need to plan field changes carefully before applying them.
• Light AI layer: Despite the name, generative writing help is minimal compared with newer AI story tools. The main AI feature is opt-in writing analysis, so anyone wanting automatic plot or character ideas will need a separate assistant.
• Browser only: No dedicated phone or desktop app is advertised on the official site. The web version opens in mobile browsers, but filling in long template pages on a small screen is slower than on a laptop.
• Thin support material: Guides and community resources are smaller than those around larger rivals such as World Anvil. Expect to learn by experimenting, which takes time if you want to master collections, timelines and linking quickly.

Who is Using Notebook AI?

Fiction writers juggling large casts make up Notebook AI’s core audience, alongside tabletop game masters who need lore kept in one place.

• Novelists: Authors of long series track characters, places and relationships across several books. Linked pages let them check a detail from book one before it contradicts something in book three.
• Game masters: Tabletop hosts prepare campaign settings, factions and lore between sessions. Shared universes let co-hosts or players view and update the same notes as the campaign develops.
• Roleplay groups: Online roleplay communities use shared universes to keep characters consistent across many contributors. Each member adds pages while the group keeps one agreed record of the setting.
• Creative writing teachers: Educators run worldbuilding exercises in which students answer the guided questions for an invented person or place. The prompts give younger writers a structure that a blank page cannot.

Pricing

Starter is free, and Premium is listed at $9 a month, falling further on longer billing terms (official site, October 2026).

One 2023 blog review quoted $12 a month, which looks like older pricing, so we follow the official $9 figure.

Disclaimer: The monthly rate shifts with the billing term you choose, so confirm the final figure on the checkout page.

What Makes Notebook AI Unique?

Question-driven templates are Notebook AI’s real differentiator, since rivals such as World Anvil and LegendKeeper mostly start you on an open wiki page. That matters for writers who know their world exists but cannot decide what to record first.

The pairing of an MIT-licensed codebase with private-by-default pages is also unusual in this category. Add a free tier with unlimited characters, and Notebook AI appeals to people who care how their creative data is stored and do not want a subscription.

Compatibilities and Integrations

Notebook AI works entirely in the web browser and connects to very little outside software.

• Platforms: Any modern desktop or tablet browser runs the full site, and phones can open it through a mobile browser.
• Collaboration: Invited users receive full edit access to a shared universe.
• AI analysis: IBM Watson processes opt-in document analysis for Premium members, according to the privacy policy.
• Payments: Stripe handles subscription billing, as stated in the privacy policy.
• Source code: The MIT-licensed GitHub repository lets developers study or adapt the application.

Notebook AI Tutorials

A first universe takes a few minutes to set up and needs only a free Starter account.

1. Create a free Starter account on notebook.ai.
2. Start a new universe and give your setting a name.
3. Add a main character and answer the prompts that matter for your story.
4. Create locations and items, then link them to the characters connected with them.
5. Open the document editor and draft a scene with your notes beside it.
6. Invite a co-author or player to the universe if you want to plan together.

How We Rated It

Notebook AI earns 3.7 out of 5, lifted by its free tier and privacy defaults but held back by weak integrations and thin support.

Summary

Notebook AI is a sound choice for novelists and game masters who want a structured, free place to plan a fictional world. Its guided questions and linked pages help more with organisation than with prose. The main limitation is the light AI layer, together with a busy interface that takes time to learn. Writers wanting heavy generative help should pair it with a separate assistant. Start with one universe and two or three page types, then expand once the prompts feel familiar.