The commonest complaint about AI-assisted writing is that the result sounds like AI. It is a fair complaint, and it is mostly fixable. The tells are consistent, and so are the habits that avoid them.
What "sounds like AI" actually means
Six patterns account for most of it:
Uniform sentence length. Everything lands between twelve and eighteen words. Human prose varies hard, and the variation is most of what people hear as voice.
Summary instead of scene. Emotions get named rather than shown. "She felt a wave of relief" instead of what she did with her hands. See show don't tell.
Every character speaks the same. Same register, same sentence shape, same willingness to answer questions directly.
Symmetrical structure. Three examples every time. Every paragraph opening with a topic sentence. Every scene resolving neatly.
Stock vocabulary. A recognizable set of words and constructions that recur regardless of genre or character.
Explaining the beat just written. A good moment, followed immediately by a sentence explaining what it meant. This one is the most damaging and the easiest to fix.
The habits that keep it yours
Write the openings yourself. The first paragraph of a chapter sets the voice for everything the assistant generates after it. If you write two hundred words in your own voice, generated continuations pull towards it. If you start from nothing, they pull towards the default.
Generate small. A paragraph at a time, not a chapter. Long generations drift because there is nothing of yours in them to anchor to. This is the single biggest difference between output that reads as yours and output that does not.
Edit every generation before moving on. Not later. The drift is invisible once there are ten pages of it. Changing three words per paragraph as you go is enough to keep the voice, and costs nothing.
Never accept the first version of an important scene. Emotional turning points, the opening, the ending. Generate them if it helps you see the shape, then write your own.
Cut the explaining sentence. Whenever a generated passage lands a good moment and then explains it, delete the explanation. This one edit does more for the prose than any other.
Using the tools deliberately
The AI writing assistant works on a selection, and which action you pick changes how much of your voice survives.
Lowest risk:
- Shorten: removes words, adds nothing. Your sentences, fewer of them.
- Expand on a specific line: you supply the content, it supplies the detail.
Medium:
- Rewrite: useful for diagnosis. Read the alternative, notice what it fixed, then apply that fix in your own words rather than accepting the text.
- Change tone: reliable for a passage that is in the wrong register, less reliable at keeping idiosyncrasy.
Highest risk:
- Suggest next and full chapter generation. Fine for the connective tissue between scenes. Not for the scenes that carry the book.
A workable split: generate the paragraphs moving people between places and events, write the paragraphs where something changes.
Give it something to imitate
Context is what steers output. Three things measurably change what you get back:
A specific synopsis. It is used for tone as well as plot. See Writing a story description that gets good results.
Tagged characters. Use @ to tag people from your Series Bible before generating dialogue. A character whose profile records how they speak keeps their voice. An untagged one converges on a default within a few chapters. What to put in a character profile covers how to write that field so it works.
Your existing text. The assistant reads the current chapter. The more of the chapter is genuinely yours, the more the next paragraph sounds like you.
A pass that finds the tells
On a finished chapter:
- Read it aloud. Anything you stumble on is not in your voice. This catches more than any other check.
- Look at sentence lengths in one paragraph. If they are all similar, break one in half and run two together.
- Cover the dialogue tags and read an exchange. If you cannot tell who is speaking, the characters are not differentiated yet.
- Search for your own crutches. Everyone has a handful of words they overuse. Find yours, and separately find the ones the AI keeps adding.
- Delete every sentence that explains the sentence before it.
Whether it is still your book
That is a fair question to ask and it has a sensible answer, covered in Is it cheating to write a book with AI and in AI content disclosure for the platform rules. Practically: the more of the decisions are yours, the more the book is, and the decisions that matter most are what happens and how it is said.