Grok 42 XAI AI mini apps

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

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

Grok 4.20 (developed by xAI) is a high-performance AI model. It is designed to minimize hallucinations and strictly adhere to prompts, making it ideal for complex workflows, research, coding, and multi-domain reasoning.