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An Experiment: I compared AI LinkedIn posts by ChatGPT vs DeepSeek

(Hint: DeepSeek won by a little!)

4-min Read

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Word just hit the street.

ChatGPT just got another rival.

It’s this shiny new AI tool called DeepSeek.

But I have a confession to make.

I’m still figuring out how good it is.

As a stress test, I thought why not use my newsletter as a means to test it out?

This newsletter could be a flop, but we’ll do it anyway!

I’ll be using it to automate LinkedIn posts using a special method I’ll be teaching in my mini-course.

So here we go.

And if you like this method, you’ll LOVE the mini-course I’m building right now.

Just filmed the introduction. A sneak peek for you, my email list subscribers only.

(Hint: It’s about AI + LinkedIn marketing)

Join the waitlist below for a sweet 50% discount when I launch.

📌 Join the mini-course waitlist to get 50% off when it launches!

Login or Subscribe to participate in polls.

The Tools

All you’ll need to follow along in this experiment are the following:

  • A LinkedIn post template

  • An account with DeepSeek

  • My LinkedIn Post Writer prompt

(Keep in mind that DeepSeek is a Chinese company, so you may want to hold back on the data you give to it)

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The Experiment

Here’s how I’ll see how it’ll pan out:

  1. Sign up for an account with DeepSeek

  2. Paste LinkedIn Post Writer prompt

  3. Feed DeepSeek a LinkedIn post template

Do the same with ChatGPT.

Compare its results.

Then I’ll decide on a winner.

The Tutorial

1. Sign up for an account with DeepSeek

Head to DeepSeek.com

Then click on Start Now.

Just sign up using a Google account or via email.

It’s a similar process to signing up for ChatGPT.

2. Use My LinkedIn Post Writer prompt

Next, create a new chat.

Then paste this special prompt:

You are an expert LinkedIn marketer.

I want to write about using AI for LinkedIn marketing.

Please use the template I provide and follow it strictly. Just output the response and nothing else.

Keep each point to below 6 words.

Please wait for my response with the template before responding.

It should request a template.

3. Paste a Viral LinkedIn Post Template

I got this viral LinkedIn post template from Justin Welsh’s recent posts.

It’s a contrarian take type of post.

For the sake of this tutorial, you can just copy the same viral post template:

We've got {concept} all wrong.

Most people think it's about:

{Common misconception 1}.

{Common misconception 2}.

{Common misconception 3}.

But real {concept}?

It's {benefit or value 1}.

It's {benefit or value 2}.

It's {benefit or value 3}.

It's {benefit or value 4}.

It's {benefit or value 5}.

It's {benefit or value 6}.

The "normal" path promises {concept outcome} later.

But it steals your {valuable resource} NOW.

{Downside 1}.

{Downside 2}.

{Downside 3}.

{Downside 4}.

{Downside 5}.

Here's the truth:

You don't need {misconception result} to achieve {goal}.

You need {key value 1}, {key value 2}, and {key value 3}.

Ready to build some?

Join my {offer name or description}.

{Timeframe}.

{Action steps}.

{Promised result}.

Start here: {call-to-action link}.

Paste it into DeepSeek.

Here’s its response.

What do you think of it?

We've got AI for LinkedIn marketing all wrong.

Most people think it's about:

Automating all posts.

Replacing human creativity.

Spamming connections endlessly.

But real AI for LinkedIn marketing?

It's smarter content personalization.

It's data-driven audience insights.

It's optimizing post timing.

It's enhancing engagement strategies.

It's saving time, not effort.

It's amplifying human creativity.

The "normal" path promises viral posts later.

But it steals your credibility NOW.

Generic, robotic content.

Over-automation alienates audiences.

Missed human connection opportunities.

Wasted time on wrong tools.

Damaged professional reputation.

Here's the truth:

You don't need AI to replace you to achieve LinkedIn success.

You need strategic AI tools, human creativity, and data-driven insights.

Ready to build some?

Join my AI-Powered LinkedIn Marketing Masterclass.

1-hour session.

Actionable strategies.

Immediate results.

Start here: [Insert call-to-action link].

Not too shabby!

Let’s now repeat that same process on ChatGPT.

A similar first response.

What I got back from ChatGPT:

We've got AI for LinkedIn marketing all wrong.

Most people think it's about:

Automating every post.
Spamming cold messages.
Replacing human touch completely.

But real AI for LinkedIn marketing?

It's boosting content strategy.
It's optimizing engagement timing.
It's crafting tailored outreach.
It's scaling personalized connections.
It's enhancing data-driven decisions.
It's saving you valuable time.

The "normal" path promises results later.
But it steals your authenticity NOW.

Generic messaging.
Missed opportunities.
Wasted effort.
Lost connections.
Damaged reputation.

Here's the truth:

You don't need spammy tactics to achieve LinkedIn growth.

You need creativity, precision, and strategy.

Ready to build some?

Join my LinkedIn AI strategy session.

In 7 days.
Learn, apply, grow.
Stronger connections, smarter growth.

Start here: [Insert call-to-action link].

The Verdict

I’m surprised to say that it’s almost a 50/50!

Although DeepSeek did write it slightly faster, it does not make much of a difference in our use case.

I’m looking more for quality posts that require less human editing down the line.

And now I hereby declare that the winner is...

Drumroll……..

DeepSeek!

I’m impressed!

The Next Steps

Both posts now just need an image and it’s ready for publishing!

That could be a classic LinkedIn selfie.

Or a full-body shot.

or a simple Twitter/X-styled quote image

Like the results here?

In my mini-course, I’ll teach you more about how to generate more of such viral templates + build a system to craft a workflow for your LinkedIn strategy.

Join the waitlist below.

📌 Join the mini-course waitlist to get 50% off when it launches!

Login or Subscribe to participate in polls.

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Hope you had fun experimenting with me.

BTW, hit reply and let me know what your 2025 goals are!

I’m all ears.

Talk more next week!

Justin

P.S. If you need more personal help with growing on LinkedIn using AI, book a 1:1 coaching call with me.

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