Shortly after X announced its plans to test a three-tiered subscription service, X owner Elon Musk teased that his new AI chatbot, xAI's Grok, would be part of the top-tier subscription, X Premium+.

The AI chatbot, which is Musk’s answer to OpenAI’s ChatGPT, Google’s Bard, Anthropic’s Claude and others, answers questions in a conversational mode, but is said to have more of a personality.