How Do You Use AI to Write Without Sounding Like AI?

The short answer

Three things fix almost all of it. Teach it your voice once, by pasting three things you've written and asking for six rules you reuse in every prompt. Give it what only you know: the client's actual words, the real numbers, what happened on the call. Generic input is what produces generic output. Then edit in three passes: cut the giveaway words (delve, leverage, elevate, robust, “in today's fast-paced world,” “it's not just X, it's Y”), break the too-even rhythm by varying sentence length, and read it out loud, deleting anything you wouldn't say to the person's face. Some messages, like an apology or bad news, are still worth writing yourself.

There's a particular flavour to unedited AI writing. Smooth, confident, perfectly balanced, and completely forgettable. It reads like a brochure for a company that doesn't exist. When a prospect gets a message like that, they don't think “this is AI” so much as “this is a template,” and templates get ignored.

The fix isn't to stop using AI. It's to stop handing it an empty brief and accepting the first thing it gives you.

Why does AI writing sound generic?

Because it's averaging. Asked to write “a follow-up email to a prospect,” it produces the most typical version of that thing, which is the one everyone else gets too. It also defaults to a corporate register, it hedges, and it balances every sentence to the same length, which is what makes a long passage feel oddly flat.

None of that is a flaw you have to accept. It's what happens when the only information in the prompt is a job title and a task.

How do you teach AI your voice?

Do this once, save the output, and reuse it forever:

Build your voice rules

Prompt

Here are three things I've written that sound like me: [paste an email to a client, a post, and a casual message to a colleague]. Step 1: Describe my writing style in six short rules covering tone, average sentence length, words and phrases I use often, words I never use, how I open and how I close. Step 2: List five habits of mine that make my writing recognizable, including anything slightly awkward or imperfect. Step 3: Rewrite this message in my style so I can check you've got it: "Hi, I hope this message finds you well. I wanted to reach out to see if you might be interested in my services." Keep the six rules short enough that I can paste them at the top of every future prompt.

Save the rules in your AI tool's custom instructions, or at the top of a project, so every draft starts from your voice instead of the average one. Refresh them once or twice a year, or whenever the drafts start drifting.

What makes a draft sound like you?

Detail no model could guess. Compare:

“Following up on our conversation, I wanted to reiterate how excited I am about the opportunity to help streamline your operations.”

“You mentioned you're doing invoices on Sunday nights. That's the bit I'd take off you first, probably in week one.”

The second one isn't better writing. It's better information. So feed the prompt: what the client said in their own words, the real numbers, the specific thing you noticed, what went wrong last time, the constraint you're working under. If you give it nothing specific, no prompt engineering will save the output.

What words give AI writing away?

Delete these on sight, whether AI wrote them or you did:

Words: delve, leverage, elevate, robust, seamless, utilize, foster, navigate (as a metaphor), landscape, realm, tapestry, testament.
Openers: “In today's fast-paced world,” “In an era of,” “I hope this email finds you well,” “I wanted to reach out.”
Structures: “It's not just X, it's Y.” “Whether you're A or B, C.” Three-item lists for everything. A rhetorical question as the opening line.
Endings: “At the end of the day,” “The bottom line is,” a closing paragraph that repeats what you just said.
Habits: every sentence the same length, every paragraph exactly three sentences, emoji bullet points, bold on half the words, and em-dashes everywhere.

Also cut the enthusiasm it adds for free. Real people are rarely “thrilled” or “excited to share” in a work email.

What is the three-pass edit?

Treat the draft as raw material, not a finished thing:

Truth pass. Is every fact right? Every number, name, date and promise. AI will state things confidently that it made up, and that's your name on the email.
Cut pass. Remove the giveaway words above, delete any sentence that doesn't change what the reader does next, and cut the whole thing by about a third. Vary the sentence lengths. One very short sentence does a lot.
Voice pass. Read it out loud. Put back a contraction, a small aside, the way you'd actually say it. Fix anything that would embarrass you to say to the person's face.

Two minutes of this turns a generic draft into something that sounds like a person wrote it quickly, which is exactly what it should sound like.

How should you prompt to get a better first draft?

Ask for less polish and more substance:

Ask for a messy draft. “Write it the way I'd dash it off to a colleague” beats “write a professional email.”
Set limits. Word count, no exclamation marks, no em-dashes, no adjectives in the first line.
Ask for options. Three short versions give you parts to steal from; one long one makes you edit someone else's structure.
Make it ask you questions first. “Before you write, ask me the three things you most need to know.” This single line fixes a lot of thin output.
Give an example. Paste a message of yours that worked and say “like this one, for this new situation.”

Get a draft that already sounds like you

Prompt

My voice rules: [paste the six rules]. Here's a message I've sent before that worked well: [paste]. Now write [what you need: a follow-up to a prospect, a project update, a reply to a tricky request] for this situation: [paste the real details, their words, the numbers, what happened]. Before you write, ask me the three things you most need to know that I haven't told you. Then give me three short versions, under [X] words each, written the way I'd dash one off to a colleague. No exclamation marks, no em-dashes, no "I hope this finds you well," no words like delve, leverage, elevate, robust or seamless, and nothing enthusiastic I didn't say myself.

And when you've written something yourself and want it checked rather than rewritten:

Edit without flattening your voice

Prompt

Here's something I wrote: [paste]. My voice rules: [paste]. Don't rewrite it wholesale. Step 1: List anything confusing, anything a reader could misunderstand, and any claim I should back up. Step 2: Suggest specific cuts, quoting the words to delete, so it's about a third shorter. Step 3: Point out any sentence that sounds like corporate filler or like AI wrote it, and suggest how I'd say it instead, in my voice. Step 4: Leave my quirks alone, including fragments and repeated words, unless they genuinely confuse the reader. Show your suggestions as a list, not as a new version of the text.

When should you not use AI at all?

Write these yourself, even badly:

An apology when you got something wrong. The effort is the point.
Bad news to a client: a missed deadline, a mistake, a price change.
Condolences or personal news. Always.
A short, warm reply you could type in 30 seconds. Running it through a model makes it worse and slower.
Anything containing information the client hasn't agreed to share with an AI tool.

Everything else is fair game: first drafts, outlines, research summaries, turning notes into updates, rewriting for length, and finding the three questions you forgot to ask.

Does it matter if clients know you use AI?

Most clients assume you do, and don't mind, as long as the work is right and the thinking is yours. What they do mind is a message that clearly wasn't written for them, a factual error you didn't catch, or confidential details pasted into a tool you never told them about. Be straightforward if anyone asks: you use AI to draft and speed things up, you check everything, and their confidential information stays out of it.

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Fifteen detailed, copy-and-paste prompts for every step of getting a client, each one giving AI a role, context, steps and the format you want back, which is exactly what stops it writing like everyone else. Includes a 15-minute fit call plan, a discovery call plan and an objection role-play.

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Frequently asked questions

Why does AI writing sound generic?

Because with a thin prompt it produces the most typical version of whatever you asked for, in a corporate register, with every sentence about the same length. Give it your own writing samples and the specific details of your situation and the output changes completely.

How do I make AI write in my voice?

Paste three things you've written that sound like you and ask for six short rules covering tone, sentence length, words you use and avoid, and how you open and close. Save those rules and paste them at the top of every writing prompt, or store them in your tool's custom instructions.

What words make writing sound like AI?

Delve, leverage, elevate, robust, seamless, utilize, foster, tapestry and testament, openers like “in today's fast-paced world” and “I hope this email finds you well,” and the “it's not just X, it's Y” structure. Even sentence lengths and a summary paragraph at the end are also giveaways.

How should I edit an AI draft?

In three passes: check every fact, number and promise; cut the giveaway words and about a third of the length while varying sentence lengths; then read it out loud and put your own phrasing back in.

What should I never use AI to write?

Apologies, bad news to a client, condolences and personal messages, and any short warm reply you could type in half a minute. Also anything containing client information that hasn't been approved for the tool you're using.

Do clients mind if I use AI?

Most assume you do and don't mind, as long as the thinking is yours and the work is right. What they mind is a message that obviously wasn't written for them, an uncorrected factual error, or their confidential information going into a tool without their knowledge.

How do I get a better first draft from AI?

Give it real details, ask it to question you before writing, set limits such as word count and banned phrases, ask for three short options rather than one polished piece, and paste an example of your own writing that worked.

Voice matters most where clients first meet you: in first messages, on LinkedIn and on your website.