Grok is the least "honest" out there. And you should 100 % never believe anything Elon Musk says, he's one of the most clueless and unreliable people in existence.

Grok had specific baked in instructions to avoid negative statements about Musk and Trump, how is that for truth seeking? No other LLM company has done that from what I know.

Reportedly LLMs from China churn and struggle a little with questions related to Winnie the Pooh:

DeepSeek’s Winnie-the-Pooh Problem (Feb 2025) - https://medium.com/humanai/deepseeks-winnie-the-pooh-problem...