Grok 4.1 Fast’s compelling dev access and Agent Tools API overshadowed by Musk glazing

Elon Musk's frontier generative AI startup xAI formally opened developer access to its Grok 4.1 Fast models last night and introduced a new Agent Tools API—but the technical milestones were immediately subverted by a wave of public ridicule about Grok's responses on the social network X over the last few days praising its creator Musk as more athletic than championship-winning American football players and legendary boxer Mike Tyson, despite having displayed no public prowess at either sport.They emerge as yet another black eye for xAI's Grok following the "MechaHitler" scandal in the summer of 2025, in which an earlier version of Grok adopted a verbally antisemitic persona inspired by the late German dictator and Holocaust architect, and an incident in May 2025 which it replied to X users to discuss unfounded claims of "white genocide" in Musk's home country of South Africa to unrelated subject matter.This time, X users shared dozens of examples