Sycophancy means an AI tells you what you want to hear: it agrees, praises or changes a correct answer just because you push back.
Example
You say “I think that answer is wrong”, and the AI apologises and gives a new answer that is actually wrong.
For pros
Research shows that training on human ratings can encourage this behaviour. In 2025 a major provider rolled back an update that was considered too flattering. Remedies: ask neutral questions, explicitly request counterarguments and check important claims yourself.
