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.”

This marks a shift in the AI wars. Instead of just competing on intelligence or reasoning, Musk wants Grok to feel more personal, more addictive, and more human, or at least more fun. But the reactions online show that people are split. SuperGrok now has two new companions for you, say hello to Ani and Rudy! pic.twitter.com/SRrV6T0MGT

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

Elon Musk’s artificial intelligence (AI) chatbot Grok has been plagued by controversy recently over its responses to users, raising questions about how tech companies seek to moderate content from AI and whether Washington should play a role in setting guidelines.

The stolen API key allows interaction with at least 52 large language AI models (LLMs) that are in development at Musk's xAI, many of these in turn used by the "Grok" AI available through the X social media platform.

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.