Grok 42 Free AI mini apps

Grok 4.20 is an AI-powered assistant, developed by xAI, designed to be maximally truthful, useful, and curious.

Grok 4.20 Thinking model using reinforcement learning to think longer about problems and solve them.

Grok 4.20 Experimental is designed as a reasoning-first, real-time AI, optimized for logic, coding, live data, and multimodal understanding.