Elon Musk's generative artificial intelligence company xAI unveiled its new reasoning model late on Friday, known as Grok 4 Fast. “We used large-scale reinforcement learning to maximize the ...

With all the AI news coming out each week, some of the more significant advancements can be hard to track. Grok 4 Fast is streamlined version of xAI's flagship Grok 4 model released back in July 2025.

Elon Musk's frontier generative AI startup xAI formally opened developer access to its Grok 4.1 Fast models last night and introduced a new Agent Tools API—but the technical milestones were ...

A few months after the release of Grok 4 and an extremely problematic antisemitic meltdown of its chatbot, xAI is already trying to move on with its latest AI model. Elon Musk's xAI announced the ...

xAI’s Grok 4.1 arrives at a moment when users are no longer impressed by raw model size or benchmark bragging rights. What they want now is simple: an AI that works, consistently, without friction.

The update marks one of the most significant leaps yet in xAI’s push to create highly capable, emotionally aware, and human-aligned AI systems. Image: Envato “Personality goes a long way,” was a line ...

Elon Musk-owned xAI has started rolling out Grok 4.1, which is an upgrade to the existing Grok 4 model. xAI has launched two Grok 4.1 models with some incremental improvements. One of the models is ...