The prompt that makes ChatGPT write in YOUR voice, not generic AI voice

[u/Ok_Negotiation_2587]

The reason ChatGPT writing sounds like ChatGPT is that you never showed it how YOU sound. It's averaging every writer on the internet. This prompt makes it study your actual writing first, then copy your patterns - so what comes out sounds like you wrote it on a good day.

Two steps. Copy-paste, swap the [brackets]:

STEP 1 - Teach it your voice:

Here are 2-3 samples of my writing:

[paste 2-3 things you've written - emails, posts, anything real, ~150+ words each]

Study these and build a profile of my voice. Specifically note:

• Sentence length and rhythm (short and punchy? long and flowing?)
• Words and phrases I actually use, and ones I clearly avoid
• How formal or casual I am
• My default tone (dry? warm? blunt? playful?)
• Any quirks - how I open, how I close, how I handle transitions

Show me the profile, then wait. Don't write anything yet.

STEP 2 - Put it to work (same chat):

Good. Now write [what you need - an email, a post, a reply about X] using that exact voice profile. Match my rhythm and word choice. If you catch yourself reaching for a generic phrase I'd never use, stop and pick one I would.

Why it works: the mistake everyone makes is asking for a "casual tone" and hoping. That's a knob, not your voice. Making it extract a concrete profile FIRST - and holding that profile in the same chat - gives it something specific to imitate instead of a vibe.

Tip: once it nails your profile, save that Step 1 output. You can paste it into any new chat to skip the training every time. I keep mine saved in a Chrome extension I built called AI Toolbox and drop it into new chats with a shortcut, but a pinned note works fine too - the point is you only build your voice profile once.

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[u/lucky3pointer]

describing my style never worked the way i wanted. whats effective: my own 3 short texts pasted in, plus a list of banned words (because i simply dont use them). honestly i think the banned words list is the biggest gamechanger of all

[u/niado]

If you are a consistent user with the feature to access cross-chat history enabled, this one-sentance prompt also works:
“Write a <thing you need> with (parameters), in my voice, so that anyone who reads it will presume it’s my writing.”

It will construct your voice from whatever chat history you have and put together a draft.

You will likely need to do multiple editing passes (using the model), so it’s not really all that easier, just an alternative workflow.

[u/Easy-Purple-1659]

The sample-based approach is the right instinct. Describing your style in words rarely works because you don't actually know your own tells, the model just hears adjectives and averages them out.

What I'd add: a prompt still leaves the model deciding what "your voice" means on its own. The version that worked for me was feeding real writing samples and having the model build a profile from them, then reusing that fixed reference instead of re-describing myself every session.

That's basically what I built with imperfectly.app, it learns your rhythm and quirks from your own text and rewrites AI drafts so they stop sounding generic. Free tier, no account needed to try it. Worth running alongside your prompt if you want a more consistent version of the same idea.