Sean Garnier

@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 sky on the left has a soft sunrise look — it's warmer (more orange/pink) close to the ground and gets cooler (bluer) higher up. There's also a gentle haze that makes far-away balloons look smaller and a bit fuzzy. That's how real photos look in the morning.

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 picture on the right is the real one and here is why; the natural street imperfections and realistic building textures coupled with more-organic lightning behavior all add up to portray the fact that it is actually the real image.

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. Reason: It's a classic real view of Positano (Amalfi Coast, Italy) with natural hillside, uneven buildings, and lived-in coastal details which is harder for AI to get perfect.

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. The setting looks more realistic and less cinematic, the lighting is flat like a typical zoo or wildlife park photo, and the overall composition feels natural rather than overly dramatic or stylized.

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 The apple shows natural skin flaws, uneven light falloff, & realistic surface reflections, while the orange image looks too polished with overly smooth texture, uniform lighting & less natural detail overall.

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 composition feels almost too perfect and balanced, the mountain, valley, lake and trees are arranged with near mathematical symmetry. The level of detail is uniformly high across the entire image, Artists usually emphasize certain focal areas and leave others.

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!

@PerleLabs H = Human Small details that artificial intelligence would never have thought to include are very clearly visible, such as some parts being dirty or not painted well or half of the advertising sign not lighting up.

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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