Elon Musk announced xAI's Grok 4.5 is in private beta testing, claiming its performance rivals or surpasses Anthropic's Opus, ...

Elon Musk says Grok 4.5 is testing at Tesla and SpaceX, with Opus-level performance claims and a C/C++ rewrite planned for ...

Elon Musk has revealed that Grok 4.5 is now being tested internally at SpaceX and Tesla, claiming early evaluations place the ...

Elon Musk announced Grok 4.5's private beta, asserting its performance rivals or surpasses Anthropic's Opus, with ongoing ...

According to Musk, early evaluations indicate that the model's performance is close to, and may even exceed, Anthropic's ...

SpaceX exercised its option to buy Cursor for $60 billion in all stock, the largest startup acquisition ever, arming xAI and Grok against rivals Anthropic and OpenAI.

The deal adds a missing piece to the company's vertically integrated model at the software application layer.

Musk said reinforcement learning is continuing to improve the model and that "Grok Build," xAI's coding-agent harness, is ...

A lawsuit claims xAI fired former engineer Devin Kim after he raised Grok safety concerns, adding to scrutiny of the chatbot.

AI is often described as a mirror of humanity. A mirror can flatter, distort, or expose. But do we like what we put in front ...

Musk said xAI plans to release 'completely-trained-from-scratch' new models through SpaceX every month for the rest of the ...