Fran

@PerleLabs Middle. The Leaning Tower image looks slightly too clean and evenly lit, with very uniform texture and symmetry in the details. It feels a bit overly polished compared to the more natural sky variation and atmospheric softness in the left and right images.

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 My opinion is that the one on the left is a real photo, compared to the other balls it looks the most realistic, the right ball is broken with many bugs, when you zoom in it is noticeable, the central ball immediately noticed that it is AI

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 lighting, reflections, and surroundings feel natural and consistent with a real street photograph, while the left image appears overly stylized and polished in a way that’s common with AI generated visuals.

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 ight The right image shows a well-known real location Positano on Italy’s Amalfi Coast with natural terrain, realistic lighting, and architecture that follows the cliff contours in a structurally consistent way.

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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