Elon Musk still hasn’t gotten over the tragic death of an internet-famous squirrel. Musk dragged Peanut the Squirrel, who was euthanized by the State of New York last year, into the furor over the Trump administration’s failure to release the much-hyped files related to convicted sex offender Jeffrey Epstein.

Grok 4 is xAI’s most advanced model yet, but early praise is clashing with old scandals and fresh tests of its limits.