How to Spot AI-Generated Content (and Use It Without Losing Authenticity)

AI content tools have gone from novelty to normal in just a few short years. From speeding up blog posts to generating entire web pages, they’re now baked into a lot of marketing workflows. And it’s easy to see why – they’re fast, scalable, and budget-friendly.

But there’s a trade-off. 

AI-generated content can sound robotic, feel off, or – worse – damage your credibility with customers and your rankings with Google.

Here’s how to spot the signs of AI-written copy, how to avoid common pitfalls, and how to use AI without losing the human touch. 

Human vs. AI Content: What’s the Difference?

The obvious answer: one’s written by a person, the other by a machine. But it goes deeper than that.

AI-generated content has some serious perks. It’s quick, cost-effective, and can churn out thousands of words in seconds. But it also comes with risks, especially if you’re relying on it without editing. 

Here’s what often goes wrong:

• The tone can feel flat or overly formal
• Content lacks nuance or genuine perspective
• Sentences sound repetitive or oddly structured
• There’s little brand personality or reader connection

When this happens, users switch off. And Google might too.

Will Google Penalise You for Using AI?

Not exactly, but it depends on how you use it.

Google doesn’t ban AI-generated content. Given Google’s use of artificial intelligence for its AI Overviews, that would be a bit hypocritical. What it does penalise is low-value, unhelpful, or spammy copy – whether it’s written by a person or a bot. If your content isn’t useful to people, it’s not useful to Google either. 

Back in the Helpful Content Update, Google clarified what it’s actually looking for:

• Content created for a specific audience
• Copy that demonstrates expertise
• Information that is trustworthy and credible
• Pages that actually meet the user’s needs

That’s important because what you consider useful helpful might not tick all those boxes. Just answering a question isn’t enough – you’ve got to do it well, with authority, accuracy and intent. 

How to Tell If Something Was Written by AI

This isn’t an exhaustive list – AI writing tools evolve constantly, and each one has its own quirks. That’s why using an AI detector is often the more efficient route. But if you’re reviewing content and something feels slightly… off – trust your instincts. 

These are some of the more common giveaways.

Language That Doesn’t Sound Like a Real Person

Certain words pop up again and again, especially in AI-written marketing copy. If you’re seeing phrases like “ensure seamless experiences”, “leverage innovation”, or “utilise cutting-edge solutions”, you’re probably looking at AI.

It’s not just the vocabulary either. Look for:

• Awkward Phrasing: AI has an odd way of paraphrasing things that no human would say out loud. You’ll spot phrases that are grammatically correct, technically on topic, but somehow miss the point – like they’ve been written by someone who’s read about your industry without ever actually working in it.
• Contractions: AI has a tendency to over-polish. It defaults to tidy, formal language – especially in content that’s meant to sound professional. One of the first things that can disappear are contractions (e.g., “it is” instead of “it’s”). Either that or they’re used inconsistently (e.g., You might ask, ‘what’s the point?’ but it is quite clear.)
• American Spellings: Most AI tools default to American English, so if “colour” becomes “color” or “organise” becomes “organize,” it’s likely the tool has crept back into its comfort zone. If you’re writing for a UK audience, this quickly catches the reader’s attention.
• Bad Metaphors: You may also come across metaphors or analogies that make little sense. That’s because AI has no lived experience. It doesn’t know what it’s saying – it just knows how other people have phrased things before. Which is why you might end up with things that sound poetic but mean nothing.

Structure That’s a Bit Too Predictable

​​Humans naturally mix things up. AI tends to default to formulas.

You might notice an overuse of bullet points, even when full sentences would read better. Sentences also tend to be all very short or all long and complex. Most people learn in school to interchange simple and complex sentences in their writing, but AI usually uses one or the other. 

This kind of rigid formatting is typically a good indicator that content was bot written. 

AI can also create paragraphs that are all the same length, with an almost mechanical rhythm. That lack of variation – in structure, tone, or pacing – might make the copy easy to skim, but it rarely makes it memorable.

Punctuation That’s Technically Correct (But Too Good to Be True)

AI is very good at obeying rules. Too good, actually.

Take semicolons, for example. Most people are afraid of them – which is fair, because most people aren’t actually sure how they work. AI, on the other hand, loves a semicolon. It tends to sprinkle them in like seasoning, even when a full stop or dash would do the job more naturally. Annoyingly, this is one of those tells that catches out writers who do know how to use semicolons (and happen to like them).

Another clue is punctuation that feels overly clean or slightly wrong. Em dashes are a good example. AI will often use them without spaces—like this—when most style guides (and humans) favour a spaced en dash – like this. It’s a small thing, but once you spot it, you can’t unsee it.

You might also notice that apostrophes and quotation marks are straight rather than curly. It doesn’t always mean the copy is AI-generated, but it’s often a sign the content hasn’t been touched since it came out of the box as most word processors default to curly.

Writing That’s Missing a Human Voice

Above all, AI-generated content often just feels flat. There’s no personal insight. No opinion. No sign that the writer has ever actually done, seen, or felt the thing they’re writing about.

You won’t find anecdotes, local flavour, or even small observational details that make the writing feel grounded. And that matters – especially if you’re trying to connect with a real audience.

How to Make AI Content Feel More Human

Here’s the good news: you can use AI without sounding like one.

Think of it like scaffolding – it can hold up the structure, but it still needs finishing touches to feel right.

Here’s how to fix it:

• Use AI for outlines or first drafts then edit with your tone and audience in mind
• Mix up your sentence lengths. Ask rhetorical questions. Make it sound like you or your brand
• Include lived experience or opinions – especially if they challenge the generic narrative
• Ask yourself: Would this actually help someone? Or is it just filling space?

AI can speed things up. But it’s still your job to make it sound like you.

Don’t Let AI Cost You Credibility

AI content tools are here to stay – and when used well, they’re genuinely useful. But they’re not a shortcut to quality.

Your audience can tell the difference. So can Google.

Use AI to support your content, not replace it. Keep your tone consistent. Stay helpful. And make sure what you’re saying has value, not just volume.

Not sure if your content’s hitting the mark? Get in touch with TH3 and let’s review it together.