@PerleLabs Middle
The AI-generated image is likely the middle one. The Leaning Tower appears slightly unnatural in lighting and texture compared to the more realistic London Eye and Statue of Liberty photos.
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 scene shows natural atmospheric depth, realistic lighting variation, and multiple balloons positioned organically, which is consistent with a real outdoor photograph. The others appear more stylized and uniform, typical of AI generated images.
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
The right photo, reflections on the car match the building’s windows. Tires show realistic weight on the road.
Lighting and shadows are consistent with the environment.
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
because the structure of every house, balcony, and beach umbrella aligns perfectly with physical logic and architectural styles, while the intricate, random details of the colorful umbrellas, boats at sea, and foreground flowers reflect the authentic nature of photography.
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 Right
The tiger is in a dense, realistic forest setting with dappled sunlight filtering through the canopy, creating natural shadows and highlights on the ground and foliage. The scene is consistent with a tiger's natural habitat.
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 Right
The orange has natural, subtle variations in its peel texture and color, with realistic light reflections and shadows that match the ambient light of the kitchen scene. The wood grain on the countertop is consistent and detailed, with natural wear patterns.
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.
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