How to Use AI to Write LinkedIn Posts That Sound Like You

You know you should post on LinkedIn. You have real things to say about your work. Then you open the post box, stare at “What do you want to talk about?”, and close the tab again. Or you ask ChatGPT for help and get back something that starts with “I’m thrilled to share” and ends with three rocket emojis. That isn’t you, and your network would spot it in a second.

Here is how to use AI to write LinkedIn posts that still sound like you: bring the raw material yourself (one real moment from your week, the lesson, who it is for), teach the AI your voice once with a few of your own posts, ask for a short draft in that voice, then rewrite the first line and the last line by hand and post it yourself. The AI handles structure and wording. You supply the story and the final say.

That is the whole method. Below you get the voice brief, the prompts I would copy, a worked example from messy notes to finished post, and the LinkedIn rules worth knowing before you let any tool near your account.

Why AI LinkedIn posts all sound the same

When you type “write a LinkedIn post about leadership”, the AI has almost nothing to work with. So it reaches for the most average LinkedIn post it can imagine: a big opening claim, a list of five lessons, a motivational line at the end and a question nobody answers. Thousands of people send the same request every day, so thousands of near-identical posts land in the same feed.

The problem is not the tool. It is the input. AI cannot invent the thing that makes a post worth reading: what actually happened to you, what you noticed, what you would do differently. Only you have that. Give it that, and the output changes completely.

So the job splits cleanly in two:

• Your job: the moment, the lesson, the opinion, the final edit.
• The AI’s job: turning your rough notes into a clear, tight post, offering a few hook options, and cutting what does not earn its place.

Step 1: Build a voice brief once (10 minutes)

This is the step most people skip, and it is the one that stops your posts sounding like everybody else’s. You do it once, save it, and paste it in every time (or store it in your AI tool’s saved instructions, if it has them).

Find three to five posts, emails or messages you wrote yourself and liked. They do not have to be LinkedIn posts. A good email to a client works. Paste them into ChatGPT, Claude or Gemini with this prompt:

Below are a few things I wrote myself. Study how I write and give me a short style guide (max 10 bullet points) that another writer could follow to sound like me. Cover: sentence length, how I open, how I end, words I use often, words I never use, how formal I am, and whether I use humour, emojis or lists.

Then add a "never use" list of phrases that would sound fake coming from me.

[paste your samples here]

Read what comes back and fix anything that is off. Then add your own “never use” list on top. Mine would include words like “thrilled”, “humbled”, “game-changer”, “unlock” and “let that sink in”. Save the result in a note. That is your voice brief.

Step 2: Collect the raw material, not a topic

“Productivity” is a topic. “On Tuesday I cancelled our weekly status meeting and replaced it with a five-line written update, and two people thanked me” is raw material. AI can do a lot with the second one and almost nothing with the first.

Before you open the chat, write down four short lines:

1. What happened: one specific moment, decision, mistake or result from your work.
2. What you learned or think: your actual opinion, even if it is small.
3. Who it is for: the one type of reader who would care (new freelancers, team leads, people hiring their first assistant).
4. What you want them to do: try something, share their own version, or just think about it.

Messy is fine. Typos are fine. Voice notes are fine too: record yourself telling a colleague what happened, transcribe it, and paste the transcript. The way you talk out loud is often closer to your real voice than the way you type.

If you are stuck for ideas, look at the last week: a question a client asked, a tool that saved you an hour, a meeting that went sideways, a small win on your team. Each one is a post.

Step 3: The prompt that writes the draft

Now combine the voice brief and the raw material. This is the prompt I would copy:

You are helping me write a LinkedIn post. Follow my style guide exactly.

STYLE GUIDE:
[paste your voice brief]

RAW MATERIAL:
What happened: [...]
What I think: [...]
Who it is for: [...]
What I want them to do: [...]

RULES:
- Use only the facts above. Do not invent numbers, results, names or quotes.
- 120 to 200 words.
- Short paragraphs of 1 to 3 lines, written to be read on a phone.
- No hashtags in the body, max 1 emoji.
- End with one honest question or a clear takeaway, not a slogan.
- If something is missing to make this a good post, ask me first instead of guessing.

Give me the post, then 3 alternative first lines.

The two rules that matter most are “use only the facts above” and “ask me first”. Without them the AI fills gaps with made-up details, and on LinkedIn your name is on every word.

Step 4: Write the first and last line yourself

On LinkedIn, only the first couple of lines show in the feed before readers have to tap “see more”. That opening line decides whether anyone reads the rest. It is also where AI is weakest, because it loves big general statements (“Leadership is changing.”) that nobody stops for.

Look at the three alternative openers, pick the one closest to you, and rewrite it so it names a specific moment or a specific reader. A few patterns that work well:

• Start in the scene: “Last Tuesday I cancelled our weekly status meeting.”
• Name the reader’s problem: “If your team meeting is mostly people reading out updates, this is for you.”
• Say the honest opinion: “Most status meetings should be an email.”

Then do the same with the last line. Cut any motivational sign-off and replace it with the question you actually want answered, or one plain sentence about what to try.

Step 5: Push back once, then do a fake-detail check

A first draft is rarely the best one. Instead of starting over, ask the AI to critique its own work:

Read this post as a busy [your reader] scrolling on their phone. Which sentence would make them stop reading? Which line sounds generic or like AI? Rewrite only those lines, keep the rest exactly as it is.

After that, read the post out loud and check every detail against what really happened. Did the AI round up a number, add a colleague’s reaction you never mentioned, or make the result sound bigger than it was? Fix it or cut it. If you would not say it to the person sitting next to you, it does not go out.

A worked example: messy notes to finished post

Here is what this looks like for a fictional freelance bookkeeper. The raw material, typed in two minutes:

What happened: client sent me a shoebox of receipts again in March. I made a simple shared folder + told them to snap a photo of each receipt the day they get it. This quarter it took me an afternoon instead of three days.
What I think: most small business owners are not messy, they just have no system that fits their day.
Who it is for: owners of small businesses who dread tax season.
What I want them to do: try the photo habit for one month.

The kind of draft the prompt gives back, after the first line was rewritten by hand:

In March a client handed me a shoebox. Literally. Full of receipts.

It took me three days to sort.

So we tried something small. A shared folder, and one rule: snap a photo of every receipt the day you get it.

This quarter, the same books took me one afternoon.

Here's what I keep seeing: most small business owners aren't messy. They just don't have a system that fits a busy day.

A phone camera and a folder is a system.

If tax season fills you with dread, try the photo habit for one month and see how the next quarter feels.

What's the one admin task you keep putting off?

Notice what the AI did not add: no percentage, no “game-changer”, no hashtags, no extra client quotes. Every fact came from the notes. That is the difference the “only these facts” rule makes.

Turn things you already wrote into posts

The easiest LinkedIn posts are hiding in work you have already done. A newsletter section, a client case study, a long email that explained something well, your notes from a training day. Paste one in with your voice brief and ask:

From the text below, find 3 separate ideas that could each be a short LinkedIn post for [your reader]. For each: the one-sentence point, the specific example from the text that proves it, and a first line. Do not write the full posts yet.

Pick the idea you actually care about, then run Step 3 on it. If you write a newsletter, our guide on using AI to write a newsletter pairs well with this: one good issue can feed a week of posts. The same goes for client stories, which you can shape with AI case study writing first and then cut into a post.

Which AI tool should you use?

Any of the big three can do this well if you give them the voice brief and real material. The difference is smaller than people think. Pick the one you already have open all day, and save your voice brief where that tool keeps standing instructions so you do not paste it every time. If you want a side-by-side on tone and editing, see ChatGPT vs Claude for writing.

What about LinkedIn’s own AI? LinkedIn used to offer an AI writing tool for posts, but its help center now says that tool is not available at this time and that new post-writing tools are coming. Until then, a general chat tool plus your voice brief does the job.

Format it for the feed

A few practical things that help a post get read:

• Length: LinkedIn posts can hold up to 3,000 characters. You rarely need that many. A focused post of 120 to 250 words is easier to read on a phone and easier to finish.
• White space: one idea per short paragraph. Most of your readers are scrolling with a thumb.
• One point per post: if the AI gave you five lessons, keep the best one and save the rest for later posts.
• Drafts and scheduling: LinkedIn lets you save a draft and schedule a post from the post box (same help page), so you can write three posts in one sitting and spread them over the week.

Where to stop: what AI should not do on LinkedIn

Writing help is fine. Handing over your account is not. LinkedIn’s User Agreement says you must not use bots or other unauthorized automated methods to create, comment on, like or share posts, or otherwise drive inauthentic engagement. And LinkedIn’s help page on posting warns that if it detects excessive posting that looks inauthentic, or the use of an automation tool, it may limit the visibility of those posts.

In practice that means:

• Let AI help you draft. Post it yourself, from your own account.
• Do not use tools that auto-comment or auto-like in your name.
• Write your replies to comments yourself. A short real answer beats a polished generated one, and it is where the actual relationships form.
• Keep client names, private numbers and anything personal out of the chat unless your company’s AI policy allows it. The University of Massachusetts Isenberg career team gives the same advice for networking messages: write your own draft first and remove personally identifiable information, then check any facts the AI adds.

Common mistakes (and the quick fix)

• Asking for a post about a topic. Fix: give one real moment and your opinion about it.
• Skipping the voice brief. Fix: ten minutes once, and every post after that starts closer to you.
• Posting the first draft. Fix: rewrite the first and last line, push back once, read it out loud.
• Letting the AI add proof. Fix: “use only the facts above” in every prompt, and check numbers before posting.
• Five lessons in one post. Fix: one point, one post. The rest is next week’s material.
• Hashtag walls and emoji bullets. Fix: ban them in the voice brief.

If LinkedIn is only one part of a bigger publishing week, you can start from one real idea and cut it into posts, a newsletter and a short script. Our guide to AI for content creation walks through that weekly workflow, including a voice file you reuse so every format still sounds like you.

Want the same voice across more than LinkedIn? Our guide to an AI social media content generator shows how to set up one saved prompt for every platform.

FAQ

Can I use AI to write LinkedIn posts?

Yes. Nothing in LinkedIn’s rules stops you from using a writing tool to draft your own posts; LinkedIn even offered its own AI post writer for a while. What its User Agreement forbids is using bots or unauthorized automation to post, comment, like or share, or to fake engagement. Draft with AI, then post and reply yourself.

Do people use AI to write LinkedIn posts?

Plenty do, and readers have learned to spot the generic ones: the same openers, the same lists, the same sign-offs. That is exactly why the voice brief and your own raw material matter. A post built on a real moment from your week does not read like a template, whoever helped with the wording.

What is the best ChatGPT prompt for a LinkedIn post?

The one in Step 3: your style guide, four lines of raw material, and clear rules (only these facts, a word range, short paragraphs, ask before guessing). The prompt works the same way in Claude and Gemini.

Can I automate LinkedIn posts with AI?

You can automate the writing preparation: a weekly reminder, a note where you collect raw material, a prompt you reuse. Use LinkedIn’s own scheduling if you want posts to go out later. Fully automatic posting and commenting through outside bots is what LinkedIn’s terms rule out, and its help center says automation can lead to limited visibility.

How do I make AI-written posts sound less like AI?

Give it your own writing samples to copy, a list of phrases you never use, and a real story. Then rewrite the first and last line yourself and read the whole thing out loud. If a sentence makes you wince, cut it.

The voice brief you built here works beyond the feed. If you are going after a new job, reuse it to write a cover letter with AI without it sounding like everyone else’s.

Your next 15 minutes

Do this today: build your voice brief with the prompt from Step 1, then write down one thing that happened at work this week in four lines. Run the Step 3 prompt, fix the first and last line, and post it. One real post is worth more than a month of planning to post.

If you want more of these practical, do-it-this-week AI workflows for your job, start with the free Launchpad on our home page. And if you look after social accounts for a business rather than just your own profile, the ChatGPT prompts for social media managers guide is the next step. For writing beyond LinkedIn, see the AI writing assistant guide for busy professionals.

Posts land better when the profile behind them is clear. If yours still reads like an old CV, our guide on how to use AI to write a LinkedIn profile walks through the headline, the About section and your experience with copy-ready prompts.

Job hunting as well? See how to use AI to write a resume to tailor your CV to each job ad without it sounding generic.