In terms of benchmarks, Grok seems to be better than OpenAI's GPT3.5, but lags behind the company's latest large language model - GPT 4, which powers Microsoft's Copilot.
“Grok has real-time access to info via the platform, which is a massive advantage over other models. It’s also based & loves sarcasm. I have no idea who could have guided it this way,” the X owner posted. Elon Musk Launches xAI’s Chatbot ‘Grok’ for X Premium Plus Users.