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.
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.
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 Left
The brick facades and windows have small inconsistencies that make the scene feel lived in. The scene carries the kind of subtle flaws common in real travel photos.
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.
@PerleLabs Left
Reason: contains authentic environmental lighting interaction, with convincing environmental integration and material consistency visible throughout the frame. These qualities strongly indicate genuine photographic capture.
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 👀
@PerleLabs Left
Reason: contains believable shadow gradients and physical light interaction, with convincing depth and material realism visible throughout the frame. These details are unlikely to appear in purely synthetic imagery.
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 H = Human
Reason: The scene contains authentic perspective, mild visual noise, and uneven illumination that reflect physical optics instead of algorithmic image synthesis. This reinforces the impression of deliberate visual construction.
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!
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1/
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