xAI is an artificial intelligence company best known for developing the Grok model family and assistant. The company was announced in July 2023 and became part of SpaceX in April 2026 through an officially announced acquisition.

What is xAI?

xAI develops artificial intelligence models and products for consumers, businesses, and developers. Its current platform presents a unified API for text, code, voice, images, and video, while Grok remains its best-known product.

What is the company’s mission?

The company currently describes its mission as accelerating human scientific discovery and building AI that helps people understand the universe. This is xAI’s own mission statement, not an independent assessment of its results.

What does xAI build?

Its products include the Grok model family, the Grok assistant on the web, mobile apps, and X, plus APIs for language, coding, voice, and generative media. Models, prices, and availability change frequently, so specifications should be checked in the documentation for the exact model.

What is Colossus?

Colossus is the name of the computing infrastructure xAI uses to train and operate its models. The company presents it as a major part of its expansion, but performance and comparative claims in company announcements should be treated as company statements.

How are xAI and X related?

xAI and X are not the same entity. Grok benefits from integration with X and access to timely information, while xAI’s privacy materials describe the AI service provider as separate from X Corp. Current terms should be checked to identify the legal provider for each service.

What changed when xAI joined SpaceX?

An official announcement dated April 17, 2026 states that SpaceX acquired xAI. Some current legal pages therefore use the name SpaceXAI LLC, while the xAI name and domain continue to present products and company news.

Strengths

  • A multimodal platform spanning text, code, voice, images, and video.
  • Distribution of Grok through the web, mobile apps, X, and APIs.
  • Large investments in computing infrastructure and model development.

Limitations and risks

The company’s terms state that outputs may be inaccurate, incomplete, or unsuitable and must be evaluated before use. Conversations may also be used to improve models depending on settings and applicable policies, so users should understand privacy controls before entering sensitive information.

In short

xAI is the company behind Grok and has been part of SpaceX since 2026. A reliable assessment requires separating its products and model versions, and distinguishing company claims from independently verified facts.