TL;DR: xAI’s Grok 4 Fast is a new, 2M‑context multimodal model that lands #1 on LMArena’s Search Arena and top‑10 on the Text Arena—while launching at $0.20 / 1M input and $0.50 / 1M output tokens. It’s free for a limited time on OpenRouter and Vercel AI Gateway, and early signals point to reinforcement‑learning (RL) […] The post Grok 4 Fast Should Be Impossible appeared first on NATURAL 20.
