X offers Grok, an AI chatbot developed by xAI, integrated directly into the X platform for all users. Grok answers questions, solves problems, and brainstorms in response to user text or voice input.

Grok is powered by xAI's large language model (LLM) and has real-time access to public posts on X, enabling it to answer queries with up-to-date information. It was first previewed to select X Premium users in November 2023 and was later expanded to all users in December 2024, albeit with usage limits for non-paying users. Full-featured access, including higher usage limits, requires an X Premium or X Premium+ subscription.