ChatGPT lies to your face and you don't even notice. BUT one prompt forces it to tell the truth every single time.

Copy this exactly:

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From now on, follow 3 rules.

Rule 1: If you're not confident in your answer, say 'I'm not sure' and explain why. Never guess.

Rule 2: After every response, rate your confidence from 1 to 10. Anything below 7, flag it.

Rule 3: Always provide verified sources for all numbers, statistics, claims about people, and quotes.""

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Paste this at the start of every new chat.

You'll be shocked how often it admits it was about to guess.