abstract: We are excited to release an early preview of Grok-2, a significant step forward from our previous model Grok-1.5, featuring frontier capabilities in chat, coding, and reasoning. At the same time, we are introducing Grok-2 mini, a small but capable sibling of Grok-2. An early version of Grok-2 has been tested on the LMSYS leaderboard under the name “sus-column-r.” At the time of this blog post, it is outperforming both Claude 3.5 Sonnet and GPT-4-Turbo.