Question: what is highest iq known?
Answer: Ainan Celeste Cawley (IQ score: 263) William James Sidis (IQ score: 250-300) Terence Tao (IQ score: 225-230) Marilyn Vos Savant (IQ score: 228) Christopher Hirata (IQ score: 225) Kim Ung-Yong (IQ score: 210) Edith Stern (IQ score: 200+) Christopher Michael Langan (IQ score: 190 – 210)