Grok

Grok 4 - xAI's Flagship Reasoning Model

Grok 4 - xAI's Flagship Reasoning Model

Grok 4 is xAI's frontier reasoning model, the first to break 50% on Humanity's Last Exam, with a 256K context window, $3/M input pricing, and a Heavy multi-agent variant built on 200,000 GPUs.

Grok Review: xAI's Everything App for AI

Grok Review: xAI's Everything App for AI

Grok has grown from a chatbot into a full AI platform - SuperGrok tiers, 2M context, Imagine video, Aurora images, DeepSearch, and the Grok 4.20 beta. We review the entire ecosystem to see if xAI's ambition matches its execution.