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 ...

Today marks an exciting moment for the developer community as xAI officially introduces the Grok Voice Agent API, opening the door for anyone to build powerful, real-time voice agents with ease.

Grok 4 had lower lmarena scores than I had projected based upon the amount AI training compute used. I had projections for Grok 3.5 which was renamed Grok 4. We do not have elo lmarena score for Grok ...

While Elon Musk faces off against his former colleague and OpenAI co-founder Sam Altman in court, Musk's rival firm xAI, founded to take on OpenAI, isn't slowing down on launching competitive new ...

xAI has released Grok 4.3, its flagship reasoning AI model, now available via API, Vercel AI Gateway, and OpenRouter. The update introduces a 40% price cut, a 1M-token context window, and native video ...