Grok 4.3 is next level. I've been using it quite a bit for everything.

Elon Musk posted on X endorsing Grok 4.3, indicating he has been using the AI system extensively across various applications. The post suggests Grok 4.3 represents a significant advancement, though specific technical details or capabilities are not provided in the title.

Source: Elon Musk (X) | 2026-05-14