I'll bite. I think their conversation (voice) model is more fluid than competitors. It's also very good at hitting up twitter for realtime information, and was that way before the current tool use models got fully up and running. Anecdotally, I think it has better theory of mind than its era (gemini 2.5) - I found it a useful issue spotter for negotiations and planning in a way that oAI and claude were not near its launch date. It led the vending bench for some time after launch.

Taken together, I infer that RL training toward a slightly less homogenous cultural standard than the other frontier AI labs adds some capabilities, or can at times.

It's quite long in the tooth right now, though. But I'll definitely talk to the next version; I like heterogeneity in the model space, and Grok is very different than the other big three.

Twitter is gone. X is a facet of an aggregate technology that is ultimately self-serving. It should die. "Like a dog..."