I Built an AI Humaniser Prompt I Now Use Everywhere

After testing dozens, this is the one that finally fixed my workflow

I’ve tested a lot of prompts that promise to make AI writing sound human.

Most feel like cosmetics. A few help slightly. This one changed how I write with AI day to day.

I now run it inside both Claude and ChatGPT. Long essays, LinkedIn posts, landing pages, internal docs. The output feels calmer, clearer, and closer to something I would have written myself, just faster.

Here’s the short version of why it works, before I share the full prompt.

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Why most AI writing sounds off

AI does not sound robotic because it lacks data. It has read more human writing than any of us ever will.

The problem is default behavior.

Models are optimized to produce text that looks good quickly. That pushes them toward a narrow set of patterns that perform well on social feeds and marketing blogs.

You see the same things over and over:

• Rhetorical questions that replace explanation
• Short, stop start sentences that create fake momentum
• Polished metaphors that sound smart but add little
• Setup language that delays the point

None of these are wrong on their own. The giveaway is frequency. AI overuses them because they are safe.

So instead of telling the model to “sound more human,” I took the opposite approach.

I removed its favorite shortcuts.

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What this prompt actually does

This prompt is almost entirely constraints.

• It does not add personality.

• It does not try to be clever.

• It does not teach creativity.

It forces discipline.

By banning rhetorical questions, choppy sentence rhythm, filler language, and stylistic crutches, the model is pushed into a narrower lane where it has to explain things properly.

That is why the output feels more human. Not because it is expressive, but because it is accountable.

Two rules matter more than everything else.

1. Avoid rhetorical questions.

2. Avoid staccato stop start sentences.

Those two alone remove most obvious AI tells.

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How I use it in practice

I do not treat this as a final writing style.

I use it as a first pass.

I generate with the Humaniser prompt on to strip out AI habits. Then I edit like a human editor would, adding emphasis, cadence, or opinion where it actually adds value.

Think of it as a filter, not a brain.

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The full AI Humaniser Prompt

This is the exact prompt I use. You can drop it into custom instructions or a system prompt: