SpaceX has agreed to invest $2 billion in Elon Musk's AI startup xAI, marking one of its largest external investments and nearly half of xAI's recent $5 billion equity raise, the Wall Street Journal reported on Saturday.

Built using huge amounts of computing power at a Tennessee data center, Grok is Musk's attempt to outdo rivals such as OpenAI's ChatGPT and Google's Gemini in building an AI assistant that shows its reasoning before answering a question.

Elon Musk's plans to ship an overseas power plant to Memphis for an xAI supercomputer raise both interest and environmental concerns.

Elon Musk denies xAI's fundraising, but the potential $200 billion valuation shows rapid growth and ambition in AI.

In a series of posts on X, the AI chatbot Grok apologized for what it admitted was “horrific behavior.” The posts appear to be an official statement from xAI, the Elon Musk-led company behind Grok, as opposed to an AI-generated explanation for Grok’s posts.

The AI chatbot Grok, which is produced by Elon Musk’s xAI, wrote numerous antisemitic social media posts Tuesday after the artificial intelligence company released a revamped version of it over the weekend. The posts ranged from alleging "patterns" about Jewish people to praising Hitler.

NEW YORK (AP) — X CEO Linda Yaccarino said she’s stepping down after two years running Elon Musk’s social media platform.

Elon Musk’s artificial intelligence start-up xAI says it is in the process of removing "inappropriate" posts by Grok on X, the social media site formerly known as Twitter, after users pointed out the chatbot repeated an antisemitic meme and made positive references to Hitler.