Who is the best liar among Artificial Intelligence? I put 12 AI agents (ChatGPT 4o, Deepseek, Gemini, Claude, Llama 3) in a room to play the social deduction game "Mafia" In this simulation, each AI has a secret role (Mafia, Sheriff, Doctor, or Jester). The experiment was supposed to be logical, but it quickly turned into chaos, betrayal, and manipulation