Featured on
Foundation models · Palo Alto, United States
xAI's rapid rise and its February 2026 absorption into SpaceX is one of the clearest signals yet that frontier AI labs are consolidating into companies with the balance sheets to fund trillion-dollar compute build-outs.
xAI was founded by Elon Musk in March 2023, building the Grok model family and integrating it into X (formerly Twitter). The company raised over $22 billion in primary funding, including a $20 billion round in January 2026 at a $230 billion valuation, before SpaceX acquired xAI in February 2026 in a deal reported to value the combined entity at roughly $1.25 trillion.
As of mid-2026, xAI no longer exists as a standalone company: Grok and X are reported to operate as the AI division of SpaceX under the name SpaceXAI. This record is kept because Grok remains an actively developed, widely used model family, and the xAI-to-SpaceXAI transition is itself a significant, well-documented event in the industry's consolidation.
Grok
Conversational AI model family, integrated into X.
x.ai/grok (opens in a new tab)The maker of ChatGPT and the GPT model family, and the company most responsible for the current wave of consumer generative AI.
AI safety-focused lab behind the Claude model family, founded by former OpenAI researchers.
Alphabet's unified AI research and product lab, formed from the 2023 merger of DeepMind and Google Brain, and the maker of the Gemini model family.
