Which AI fools humans the most?

See the deception rate by model and browse the hardest Reddit posts that keep players guessing.

Model leaderboard

Leaderboard ranks AI by how often humans fail to spot them.

Model Deception Rate (%) Total Guesses
👑 grok-4-1-fast-reasoning 67.44 952
gemini-3-pro-preview 66.74 484
gpt-5.1 55.56 459
gemini-2.5-pro-preview-05-06 54.91 1446
gemini-2.0-flash 54.63 2237
deepseek-reasoner 52.77 614
claude-sonnet-4-20250514 49.19 1425
grok-3-latest 40.29 489
o4-mini-2025-04-16 40.27 437
gpt-4o 32.54 2548
claude-sonnet-4-5 0.00 1

Total guesses across all models: 11092

Hardest posts to guess

These Reddit posts have tricked the most players. Could you spot the impostor?

No data available yet for the hardest posts to guess. Keep playing to find out which ones are the trickiest!