Past 24 hours:

https://news.ycombinator.com/item?id=49274027 - 190 comments - "Grok 4.6" (x.ai)

https://news.ycombinator.com/item?id=49275385 - 149 comments - "SpaceXAI's Grok 4.6 Scores 61 on the Artificial Analysis Intelligence Index" (artificialanalysis.ai)