Grok 4 is xAI’s flagship hybrid reasoning assistant. It delivers instant responses by default and can escalate into optional multi‑agent Think mode for multi‑step analysis of live web feeds, uploaded files, or voice inputs. Native tool access and real‑time search across X let you generate competitor insights, build pitch decks, or summarize long conversations into concise, actionable briefs. Its output is more accurate and consistent than previous versions, and you fine‑tune thinking depth to balance speed, precision, and cost.