AI Fanfic Generator

This AI fanfic generator takes two characters and a trope, and gives you a premise, the thing that goes wrong, your first line and a tag set. Free, and no sign-up needed.

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Your fanfic prompt

Title
The Long Way Round
The premise
Two people who have spent a year being carefully, deliberately civil get assigned to the same three-week project. There is one desk. Neither of them mentions it. By day four they have worked out a rota nobody agreed to out loud.
What goes wrong
The thing that would fix it is the one thing neither of them is willing to say first, and they are both running out of reasons to stay in the room.
Your first line
There was one desk, and it had been one desk for four days, and neither of them had said a word about it.
Tags
slow burn forced proximity workplace au mutual pining enemies to lovers no beta we die like men eventual romance

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What makes a fanfic prompt usable

A prompt is not an idea. An idea is "enemies to lovers". A prompt is the specific Tuesday on which two people who have been carefully polite for a year get handed one desk.

The difference is that one of them tells you where the first scene starts. That is why this tool gives you an opening line. A premise you cannot begin is a premise you will not write.

  • Name the situation, not the feeling. "One desk" beats "tension".
  • Give it a clock. Three weeks, one evening, six nights running.
  • Make the problem specific. "He already knew" is a plot. "Miscommunication" is a tag.
  • Start late. The good first line lands after something has already happened.

Using it for a fandom

Put the two names in the box. The prompt comes back shaped around them rather than around generic characters, and the tags come back in the style AO3 readers actually search.

Using it for original fiction

Leave the names out and describe the shape instead: "two rival chefs, slow burn, nobody says anything for 40k words". It will invent the people.

Fanfic generator questions, answered

Is this AI fanfic generator free?
Yes. No account is required. Type a brief, press the button, and get a prompt. AI-written prompts are subject to a fair-use limit so one person cannot use the shared service excessively.
Does it write the whole fanfic?
No, and that is deliberate. It writes the prompt: a title, a premise, the complication, an opening line and a tag set. The writing is the part you wanted to do. A tool that writes the whole thing hands you something nobody, including you, wanted to read.
Can I use these prompts in my own fanfic?
Use them anywhere you like: AO3, Wattpad, Tumblr, a private document nobody ever sees. No credit needed and no licence to read. A link back is welcome but it is never required.
Does it work for any fandom?
Yes. Put the two character names in the brief and it shapes the prompt around them. It works just as well with no names at all, if you would rather describe the dynamic and let it invent the people.
What do I put in the box?
Two characters, a trope and a tone is the sweet spot. Something like "rival chefs, enemies to lovers, slow burn" is plenty. You can leave it completely blank and it will invent a prompt of its own.
Is it explicit?
No. It writes for adults but keeps things suggestive rather than graphic: tension, restraint and what goes unsaid. If you want to take the story somewhere else, that is your document and your business.
How is this different from an AI that writes the story?
A story generator hands you finished prose you did not write. This hands you the hardest part of starting, which is the specific situation, and then gets out of the way. You keep the authorship.
Can I get a different prompt?
Press the button again. Each press is a fresh prompt, and changing anything in the brief changes the result. Nothing you type is stored.
Where do the tags come from?
They are written in the style AO3 readers actually filter by, so you can paste them straight into a work's tag field. Six to eight per prompt, lowercase, no hashes.
What languages does Rabu AI support?
Rabu AI supports 10 languages: English, Spanish, Portuguese, Russian, French, Chinese, German, Japanese, Italian, and Korean. Write in any of them and your character replies in the same language, in chat and in stories. Voice messages and videos speak it too.

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