xAI

xAI, founded by Elon Musk in March 2023, is an artificial intelligence company headquartered in Palo Alto, California. The company focuses on developing AI models that aim to deepen human understanding of the universe and accelerate scientific discovery. xAI's flagship product, Grok, is an AI assistant integrated into the social media platform X (formerly Twitter), providing users with insightful responses infused with wit and humor. Grok's development began with Grok-0, a 33-billion parameter model, followed by Grok-1, a 314-billion parameter Mixture-of-Experts model open-sourced in March 2024. Subsequent versions, including Grok-2 and Grok-3, introduced features like expanded context length, image analysis, multilingual support, and enhanced reasoning capabilities. Grok-4, launched in July 2025, emphasized scientist-level reasoning and added a coding mode and natural voice interface. In March 2025, xAI acquired X in an all-stock deal valued at $33 billion, merging their data, models, and talent. In February 2026, xAI was acquired by SpaceX, becoming a subsidiary as SpaceX consolidated its AI operations ahead of a planned initial public offering later in 2026. xAI has attracted significant investment, with a funding round in September 2025 valuing the company at $200 billion, raising $10 billion from investors such as Valor Capital, the Qatar Investment Authority, and Kingdom Holding. This funding supports xAI's mission to compete with AI giants like OpenAI, Alphabet, and Meta, amid monthly infrastructure expenses reaching $1 billion. xAI's market position is strengthened by its integration with X, providing real-time awareness of current events and a unique approach to AI interactions. The company's main competitors include OpenAI, Google, and Microsoft, which also develop advanced AI models and platforms. xAI's commitment to integrating AI with social media platforms sets it apart in the AI industry, offering a distinct user experience through its Grok assistant.