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Hallucination detective

Game: eight AI claims that all sound equally sure. Guess what's true and what's made up.

In short

AI sounds just as sure about facts as about fabrications. Always check names, numbers, dates and sources yourself, especially if you act on them.

All correct answers come from our fact-checked lessons. After each choice you see where it’s covered.

🔍 Hallucination detective

An AI gave this answer. What's true, and what's made up? It all sounds equally sure.

  1. In English text, one token is about 4 characters on average.

  2. The free Gemini app can see 1 million tokens at once.

  3. In Mata v. Avianca, lawyers were fined $5,000 for cases ChatGPT made up.

  4. Under the AI Act, chatbots only need to say they're AI from 2028.

  5. A language model learns during your conversation and updates its knowledge.

  6. According to Anthropic, Claude Mythos 5.1 is the same model as Claude Fable 5.1, with different safeguards.

  7. Grok 4.20 was released after Grok 4.5.

  8. The Dutch Data Protection Authority warned against the DeepSeek chatbot in February 2025.