How can you tell if content is AI-generated?

In this guide, you will learn how to tell when text, images, audio, or video may have been made by AI, and why it is worth knowing.

Here is the short answer. There is no perfect test, and the technology is improving quickly, so no single clue is proof on its own. The reliable habit is to check the source: who published this, where did they get it, and can you find it anywhere trustworthy? A believable image or a fluent article means very little if you cannot trace it back to somewhere you would trust.

Why this matters

Most AI-made content is perfectly innocent: a company’s marketing image, a summary drafted by a helper, a stock photo on a blog. The kind of AI that creates new text, images, and video from a request is called generative AI, and it is now part of everyday media.

The reason to pay attention is the small slice that is meant to mislead. A convincing fake image, audio clip, or video designed to look real is called a deepfake, and one can be used to put false words in a real person’s mouth or invent an event that never happened. Being able to pause and question what you see protects you and the people you share things with.

Clues in text

AI writing is often clean and confident, which is part of what makes it hard to spot. Still, a few patterns turn up often.

Watch for writing that is fluent but strangely empty, saying a lot without landing on anything specific. Look out for facts that sound authoritative but are vague on names, dates, or sources. Repetitive phrasing and an oddly even, tireless tone can also be signs.

None of these prove anything by themselves. Plenty of humans write this way, and plenty of AI writing is excellent. Treat them as gentle prompts to look closer, not as a verdict.

Clues in images, audio, and video

Images are getting harder to judge, but details still trip AI up. Hands and fingers, teeth, jewellery, text on signs, and reflections are common weak spots. Backgrounds sometimes bend or repeat in ways that do not quite make sense.

In audio and video, listen for flat, oddly smooth speech, breathing that never quite fits, or mouth movements slightly out of step with the words. If a well-known person appears to say something surprising and no reputable outlet is reporting it, that mismatch is itself the biggest clue.

Check the source, always

Whatever the medium, the strongest test is the same one journalists use. Ask where the content came from, whether a source you already trust is carrying it, and whether the account or website sharing it is genuine.

This matters because AI is increasingly trained and tested on material that was itself produced by other AI, known as synthetic data, and the polish keeps improving. As the surface clues fade, the trail back to a trustworthy origin becomes the thing you can actually rely on.

Try it yourself

You can use AI to help you think an image or article through, as long as you treat its opinion as one input rather than a ruling. Share the content with a chatbot and ask for its reasoning:

Take a careful look at this image and tell me whether anything suggests
it might be AI-generated. Point out specific details that look off, note
what looks convincing, and be honest about how confident you can really be.

Then do the human part: search for the image or claim elsewhere and see whether a source you trust backs it up.

A calmer way to look

A common instinct is to feel you now have to doubt everything you see, which is exhausting and unnecessary. A better habit is a small pause before you believe or share something that stirs a strong reaction. Most content is exactly what it appears to be. Reserving your scrutiny for the surprising and the emotional is both easier and more effective.

Next steps

If you would like to understand the bigger picture of how AI is built and the ethical questions around it, our conceptual guide on AI safety and ethics is a thoughtful place to go next.