Alright… this is it. Final Human CAPTCHA challenge 👉👉
We saved the best for last. There are 3 images. Only ONE is AI-generated.
Your job is to tell us if it's the one on the Left, Middle, or Right.
Submit your guesses by Sat, Feb 28 at 11:59pm UTC. As usual we'll be revealing the answers on Sunday!
If you got 3+ right, we’ll share how to claim your reward next week.
@PerleLabs Left
The left balloon’s chevron pattern is evenly spaced, while the right balloons have chevron patterns that are uneven, with some chevrons being larger or smaller.
It's the final week of Human CAPTCHA: Round 7
You made it this far… but we’re not going easy on you. One of these is a real photograph of a hot air balloon, the rest is AI-generated. Can you tell which one it is?
Respond with Left, Middle, or Right and tell us why below!
Submissions close Sat, Feb 28 at 11:59pm UTC. Answers revealed Sunday.
@PerleLabs Right
Because right shows more natural,realistic elements, consistent reflections on the car matching the building windows, proper tire contact with the road.
Perle Human CAPTCHA #6 🏎️
One of these sports car photos is real. The other was generated by AI.
Comment “left” or “right” with your guess, and tell us why 👀
Submissions close Sat, Feb 21 at 11:59pm UTC. Answers revealed Sunday.
@PerleLabs Right is real
because left one Clouds look overly dramatic and textured.
Some building lines look slightly warped.
Water reflections feel a bit too “perfect” and inconsistent.
Those are common AI artifacts.
Perle Human CAPTCHA #5 📸
Let’s keep your captcha streaks alive. One of these vacation photos is real, and one was generated by AI.
Which one is real? Reply "left" or "right" and explain why ↓
This week's submissions close Sat, Feb 21th at 11:59pm UTC. Both answers will be revealed on Sunday.
Perle Human CAPTCHA #4
It's time to put your human judgement to the test again. One of these images of a tiger is a real photograph, one was generated by AI.
Which one is real? Reply "left" or "right" and tell us why ↓
This week's submissions close Sat, Feb 14th at 11:59pm UTC. Both answers will be revealed on Sunday 👀
Perle Human CAPTCHA #3 📷
One of these images of fruit is a real photograph, one was generated by AI.
Which one is real? Reply "left" or "right" and why 👇
You have until Sat, Feb 14th at 11:59pm UTC. This week's answers will be revealed on Sunday.
@PerleLabs AI
The scene feels overly polished and stylistically uniform - brush textures repeat, foliage lacks natural randomness, and lighting is too evenly perfect across the landscape. Reads more like a generated illustration than a human painting.
Perle Human CAPTCHA Round 2 ✌️
Was this landscape art created by a real artist, or AI generated?
Reply with "Human" or "AI" and tell us why!
Deadline is Sat, Feb 7th at 11:59pm UTC. This week's answers will be revealed on Sunday.
PS: Use your own judgement and trust your instincts!
Perle Human CAPTCHA Round 1
Was this photo taken by a real person or generated by AI? 📸
Reply with a letter and tell us why:
H = Human
A = AI
Deadline to submit is Sun, Feb 7th at 11:59pm UTC. It's go time 👇
Think you can outsmart AI? 😏
Perle's Human CAPTCHA is here.
> Test your ability to detect AI-generated content
> 2 questions every week
> Get 3+ correct across 4 weeks to earn an exclusive badge
The real AI challenge begins. First challenge below.
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