AI Detection Challenges by Category
Different AI models fail in different ways. Some struggle with realistic fur, others with architectural symmetry or natural motion. Each quiz category on WhichOneIsReal targets a specific type of AI-generated content — choose a category below to learn how the quiz works, which models generate the fakes, and what telltale signs to look for.
📷 Image Quizzes
Static image rounds — 4 images per round, 1 real, 3 AI-generated.
The general image quiz — mixed subjects, all major AI image models.
AI often nails fur at a glance — but anatomy and eyes give it away.
Difficulty: HardCan AI replicate Van Gogh, Da Vinci and Monet convincingly?
Difficulty: MediumAI food photography looks delicious — until you spot the texture artifacts.
Difficulty: HardWheels, badges and reflections — the details AI cars consistently get wrong.
Difficulty: MediumAI struggles with architectural symmetry and correct landmark proportions.
Difficulty: Medium10 timed rounds, global leaderboard. Same images for everyone, resets at midnight UTC.
Difficulty: Competitive🎬 Video Quizzes
Short looping clips — motion artifacts and temporal consistency are the key tells.
Overview of all video models used: Kling 3.0, Sora 2, Seedance and more.
AI wildlife footage looks stunning — unnatural movement patterns reveal the fake.
Difficulty: EasyDeepfake detection in video — the hardest category on the site.
Difficulty: MediumFire, water, and wind — can AI replicate natural phenomena convincingly?
Difficulty: Easy📝 Text Quizzes
Can you tell AI-written text from the real thing?
🤖 AI Models & Comparisons
Background reading on the models behind the quizzes.
DALL-E, FLUX, Imagen, Stable Diffusion & more — compared side by side.
13 video models given the exact same prompt — see how they compare.
Bing, Firefly, Raphael — no credit card required.
Sora, Kling, Luma — free credits and watermark policies compared.
Why separate info pages per category?
Every quiz category on WhichOneIsReal uses different AI models and tests different perceptual skills. Food images fail differently than deepfake videos. Each info page explains the specific models used, the difficulty, and what details to focus on — so you can improve your detection skills systematically rather than guessing.