“Grok 4.20 Heavy (Beta 2) is extremely fast for deep analysis. Beta 3 will have many fixes and functionality gains. [@ArtificialAnlys] The Grok 4.20 Beta shows three major improvements over Grok 4: ➤ Our lowest ever hallucination rate on the AA-Omniscience evaluation. When Grok did not know the answer, it hallucinated an incorrect answer 22% of the time - this is the lowest hallucination rate of any model we”