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: Hard
Portraits, groups & everyday scenes — AI struggles most with hands and interactions.
Difficulty: Hard
Can AI replicate Van Gogh, Da Vinci and Monet convincingly?
Difficulty: Medium
AI food photography looks delicious — until you spot the texture artifacts.
Difficulty: Hard
Wheels, badges and reflections — the details AI cars consistently get wrong.
Difficulty: Medium
AI struggles with architectural symmetry and correct landmark proportions.
Difficulty: Medium
10 timed rounds, global leaderboard. Same images for everyone, resets at midnight UTC.
Difficulty: CompetitiveOne image quiz per day — click to reveal which is real and which AI model created the fakes.
Resets dailySee an AI image — guess the text prompt that created it. Word-by-word scoring.
Difficulty: Hard🎬 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: Easy
Deepfake detection in video — the hardest category on the site.
Difficulty: Medium
Fire, water, and wind — can AI replicate natural phenomena convincingly?
Difficulty: Easy
Football, tennis, basketball — AI struggles most with ball physics and crowd detail.
Difficulty: Medium📝 Text Quizzes
Can you tell AI-written text from the real thing?
⚔️ Multiplayer
Compete live against another player — real-time scoring, 10 rounds.
🤖 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.