Making your own story with AI: what the model actually needs from you

1. Two fields, and that's the whole entry fee

You type a title and one or two sentences of premise. That's it. No character sheet, no world map, no cast list, no chapter outline.

From those two sentences the language model writes the first section – around 250 words, an actual scene rather than a summary – and ends it with three concrete ways forward. From there the story builds in alternation: the AI writes, you decide, the AI writes on.

The point isn't the convenience, it's the direction of travel. You're not consuming somebody else's imagination, you're starting your own. The vampire novel set on a space station that doesn't exist because nobody wrote it exists two sentences from now.

2. What makes a premise work

Not all openings work equally well, and the difference is surprisingly systematic. Four things help almost every time.

Write a situation, not a world. "A kingdom where magic is outlawed" is scenery – the model has to invent what's happening before it can write anything. "Tonight you're supposed to arrest the man who saved your life ten years ago" is a situation. Something has already gone wrong, and the story can open inside it.

Write in the second person. "You're standing outside the house", not "Elara is standing outside the house". The moment a named protagonist exists, they quietly compete with you, and the model has to guess whether you're them or watching them.

Give it a constraint. A clock or a closed space. The train doesn't stop until morning. The invoice is due tomorrow. You've driven too far to turn back now. Constraints stop the story fraying into wandering, and they make choices feel like they cost something.

Leave one question open that your choices can answer. Who's knocking? Do you tell the truth? A premise that has already answered everything leaves nothing to play for.

And one thing that reliably backfires: go easy on invented proper nouns. A single name as flavour is fine. A paragraph of empires, dynasties and artefacts isn't drama to the model, it's homework – it ends up administering names instead of narrating.

If none of that appeals, click one of the ready-made starting points and change half a sentence in it. That's still your story.

3. Every choice is a writing decision

Shaping doesn't stop after the first section – that's really where it starts. The three options aren't fixed in advance; they're generated out of the scene that was just written. Which is why they're rarely "good, neutral, evil" and usually something specific: talk to her, follow her, or close the door again.

What you pick moves more than the next scene – it moves the tone of the whole thing. Take the cautious option three times running and you end up with a story about watching and suspicion. Confront three times and you get one about escalation. The same premise, played twice, produces two texts with almost nothing in common – not because dice are being rolled, but because you turned at different corners.

You also pick the genre, which sets the narrative stance: crime doesn't sound like romantasy, horror pauses differently than comedy does. Each genre brings its own cover art, so the finished story looks like a thing that exists rather than a chat log.

4. Rewriting a section beats starting over

Sometimes a section misfires. The AI hits a tone that doesn't match what you had in mind, or casually kills off a character you still needed. That's what regenerating is for – same choice, fresh attempt, without the story going back to zero.

In day-to-day use this is the most important shaping tool there is. It turns "the AI wrote something dumb" from a reason to quit into a minor annoyance.

5. Who's the author here, honestly

Worth being straight about: you don't write the sentences. Your role is closer to directing or editing – you set the premise, choose the direction at every fork, throw out what doesn't fit. The prose itself comes from the model.

And the model doesn't keep exact books on the world. There's no inventory system in the background; if a scene says you're carrying a lantern, the story knows that because it's written in the text so far. In very long stories that can produce small inconsistencies once early sections drop out of view. That's the trade-off for every story being written from scratch instead of assembled from pre-built parts.

The result is still unmistakably yours. Title, premise, genre, every single fork in the road – the sum of those produces a text that wouldn't exist without you. And if you like how it turned out, you can make it publicly readable behind a link and pass it on.