Uncensored AI tools for writing fiction, compared on their own words
By Edgar A.6 min read
Uncensored is a word every AI writing tool wants on its home page and few define. So I read the products’ own pages, the home page, the pricing and the terms or content rules, and wrote down what each one says about limits. Seven writing tools follow. No image apps, no companion chatbots, and this site is left out on purpose.
What uncensored means in this comparison
Here, an uncensored tool is one that will draft adult and dark fiction without refusing the premise or lecturing you halfway through a scene. That is all. Every hosted service below still has rules, usually an age requirement, and none worth using promises otherwise. Local software such as KoboldCpp sets none of its own; the law applies either way. If the term itself needs unpacking, what an uncensored AI text generator is covers it.
Prices are the listed prices when the pages were checked in November 2026, and they change often. Nothing was tested for output; this is a reading of what each company publishes about itself, not a benchmark.
The tools at a glance
| Tool | What it is | Listed price | What its own pages say about limits |
|---|---|---|---|
| NovelAI | Hosted story writer | Free trial; $10, $15 or $25 a month | Users 18 and over; stored stories encrypted; no content list for text |
| Sudowrite | Hosted novel suite | Free trial; $10, $22 or $44 a month billed yearly, $19, $29 or $59 monthly | Users 18 and over; bans unlawful use, content exploiting anyone under 18, and obscene use |
| NovelCrafter | Novel planner, bring your own AI | 21-day trial; $4 to $20 a month, AI from $8 | Limits come from the AI provider you connect |
| AI Dungeon | Interactive story game | Free tier; $14.99 to $99.99 a month | Safe, Moderate or Mature setting; Mature is for 18 and over |
| KoboldCpp | Local model runner | Free, open source | Runs on your machine; says nothing about filtering |
| LM Studio or Ollama | Local model apps | Free to run locally | Local chats stay on your device; the model sets the limits |
| Venice | Private chat assistant | Free tier; Pro $18 a month | Calls its models private and uncensored; bans illegal use |
NovelAI
NovelAI pitches its story tool as a co-writer rather than a ghostwriter. Its documentation lists three plans at $10, $15 and $25 a month and a free trial of 50 text generations. The terms require users to be 18 or over and say stored content is encrypted with your login as the key, so staff cannot read it and cannot recover it if you lose your password. They list no content rules for text. It also makes images, which this piece ignores.
Sudowrite
Sudowrite is built for novelists: a story bible that runs from outline to chapters, rewriting tools and its own fiction model, Muse. Plans run on monthly credits at $10, $22 or $44 a month billed yearly, or $19, $29 or $59 billed monthly, with a free trial that needs no card. Its pricing page says your writing is not used for training. The terms require users to be 18, and ban unlawful use, content exploiting anyone under 18, and obscene purposes, a word they leave undefined. Its blog claims more about mature scenes, but a blog post is not a policy.
NovelCrafter
NovelCrafter is a planning and drafting workspace built around a codex, its word for a story bible. AI is optional and you bring your own key, from the $8 plan up. It connects to the big providers, to hundreds of models through OpenRouter, and to local models in LM Studio and Ollama, so the content limits are your provider’s. Its own guides show how to mark a prompt NSFW, which hides moderated models, GPT and Claude among them. The terms ask for users 18 and over and forbid unlawful use.
AI Dungeon
AI Dungeon is a text adventure game rather than a manuscript tool, though plenty of people draft in it. One account-wide setting controls content, and Mature asks you to confirm you are 18 or over. A filter for content involving anyone under 18 runs at every setting; its help pages admit it misfires and let you send a blocked passage for review. Its terms accept users from 13, with some features kept for adults.
KoboldCpp
KoboldCpp is free, open-source software (AGPL v3) that runs GGUF models on your own computer from a single file, with builds for Windows, Linux and Apple Silicon Macs. Its bundled interface has a story-writing mode beside chat and adventure, with memory and world info for longer pieces, and opens at localhost:5001. It ships no model, so what it will write is a property of the model you download. Speed depends on your hardware.
A local model in LM Studio or Ollama
LM Studio is a desktop app for macOS, Windows and Linux that downloads and runs open models. Its download page prices it at nothing, and its offline documentation says what you type into a chat with a local model does not leave your device. Ollama, MIT-licensed, does the same from the command line (ollama run), and its pricing page says local use is free and unlimited, with cloud plans from $20 a month.
With either app, the model is the policy. An open model trained to refuse will still refuse on your laptop.
Venice
Venice is a private chat assistant, not a writing suite, but people draft with it. The pricing page listed a free tier of 10 text prompts a day and Pro at $18 a month with unlimited text prompts, and describes its models as private and uncensored. The terms ban illegal use and the abuse of anyone under 18, and mention a mature content filter that users under 18 must leave on. Its home page would not load, so this rests on the pricing page and the terms.
Left out, and why
SillyTavern is free and open source, but it is a chat interface that needs a separate model backend before it can write anything, which makes it a front end rather than a writing tool. Image generators and companion apps are out by design. So is this site, which would be marking its own homework; the home page and the about page explain how it works.
What could not be verified
- Sudowrite's trial length: the pricing page does not give it.
- NovelCrafter's yearly prices: annual billing is offered without the amounts.
- Which text models NovelAI runs: its home page and documentation name different ones.
- Venice's home page, which timed out.
- LM Studio's use policy, which its terms mention but which was not read.
- Whether any tool refuses a particular scene. That needs testing, and this piece only reads their pages.
How to choose
- Privacy first: run a model locally with KoboldCpp, LM Studio or Ollama, and accept that setup is on you.
- A structured novel: NovelCrafter if you want to pick the model yourself, Sudowrite if you would rather not.
- Playing a story rather than drafting one: AI Dungeon on its Mature setting.
- The simplest hosted option with encrypted storage: NovelAI.
Whatever you pick, read the terms yourself before you write anything you care about. They change more often than the marketing does.
Questions
Are uncensored AI tools legal to use?
Writing adult fiction with them is legal in most places, but no tool changes the law. Among the hosted services here, the terms of Sudowrite, NovelCrafter and Venice ban unlawful use outright, whatever the marketing suggests.
Which uncensored AI tool is the most private?
A model running on your own computer through KoboldCpp, LM Studio or Ollama keeps drafts on your machine. Among hosted tools, NovelAI describes encrypted storage in its terms.
Do local models need a powerful computer?
A capable graphics card or an Apple Silicon Mac helps a great deal. Smaller models run on ordinary hardware, only more slowly and with weaker prose.