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xAI develops large language models and AI products including the Grok chatbot family (Grok 4, Grok 4 Heavy, and Grok 4.1). It operates one of the world's largest GPU supercomputers, Colossus, in Memphis, Tennessee, and offers Grok via consumer apps, X integration, and an enterprise API.
xAI develops large language models and AI products including the Grok chatbot family (Grok 4, Grok 4 Heavy, and Grok 4.1). It operates one of the world's largest GPU supercomputers, Colossus, in Memphis, Tennessee, and offers Grok via consumer apps, X integration, and an enterprise API.
xAI was founded in March 2023 by Elon Musk along with a founding team of AI researchers including Igor Babuschkin, Christian Szegedy, Yuhuai (Tony) Wu, and Jimmy Ba, with the stated mission to "understand the true nature of the universe." It was publicly announced on July 12, 2023.
SpaceX announced an acquisition of xAI valuing the combined company at $1.25T, structured as a share exchange.
xAI closed a $20B Series E led by NVIDIA, Cisco, Valor Equity Partners, and others to fund Colossus 2 data center buildout.
xAI purchased a third Memphis building, expanding Colossus 2 to ~2GW and ~555,000 NVIDIA GPUs (~$18B).
xAI released Grok 4.1 with improved reasoning, multimodal understanding, and reduced factual hallucinations.
On July 9, 2025, xAI released Grok 4 and Grok 4 Heavy, featuring multi-agent collaboration and first-principles reasoning.
xAI acquired social platform X in an all-stock deal valuing combined entity at $113B.
xAI raised $6B Series C with strategic investors including NVIDIA, AMD, BlackRock, and Fidelity.
Co-founder
Co-founder of xAI; previously worked at Google DeepMind and OpenAI.
Co-founder
AI researcher; previously at Google Research.
Co-founder
AI researcher previously at Google.
Co-founder
AI researcher; assistant professor at the University of Toronto.
$32B raised total
No H1B sponsorship data available for this company.