Elon Musk's AI lab — real-time knowledge and reasoning
xAI was founded in 2023 by Elon Musk with the mission to understand the universe. The Grok model family is deeply integrated with X (formerly Twitter), giving it unique access to real-time information. Grok 3 is xAI's frontier model, competing directly with GPT-5 and Claude on frontier benchmarks, with a particular strength in mathematical reasoning.