Grok 4 is xAI’s most advanced model yet, but early praise is clashing with old scandals and fresh tests of its limits.

The tech billionaire’s artificial intelligence offshoot xAI debuted the new features, allow users to interact with animated characters, on Monday

AI owner Elon Musk made some big claims about Grok’s capability, saying it was “better than PhD level in every subject.”

SpaceX has agreed to invest $2 billion in Elon Musk 's artificial intelligence company xAI. The investment makes up nearly half of the company's recent $5 billion equity round, according to investors cited by The Wall Street Journal.

Elon Musk’s artificial intelligence start-up xAI said its models are now available to federal agencies. The DOD said it awarded $200 million contracts to xAI as well as Google, Anthropic and OpenAI.

Elon Musk’s AI chatbot Grok sparks controversy with violent, suggestive avatars, potentially violating App Store rules despite its 12+ age rating.

The latest Grok controversy is revealing not for the extremist outputs, but for how it exposes a fundamental dishonesty in AI development.

"AI is advancing vastly faster than any human." Musk highlighted the chatbot's positive traits, arguing it would achieve "near-perfect" scores on the SATs every time, and can outperform even the best students.

In a livestream with xAI colleagues, the billionaire entrepreneur described current AI systems as “primitive” and not for “serious” commercial use.