Grok 4 had lower lmarena scores than I had projected based upon the amount AI training compute used. I had projections for Grok 3.5 which was renamed Grok 4. We do not have elo lmarena score for Grok ...

With all the AI news coming out each week, some of the more significant advancements can be hard to track. Grok 4 Fast is streamlined version of xAI's flagship Grok 4 model released back in July 2025.

As of May 2026, the AI landscape has undergone a dramatic pivot: the focus has moved from passive conversation to active execution. OpenAI, Microsoft, and xAI have all released major updates this ...