What is Grok?

Grok is a large language model developed by xAI. The material tracks its competitive positioning against frontier models from OpenAI, Anthropic, and Google, and its expansion into coding-specific capabilities.

• May 2026 - Gavin Baker said Grok 4.3 is on the frontier of AI models, alongside offerings from Anthropic and OpenAI.
• May 2026 - Nathaniel Whittemore reported that xAI launched a version of Grok built for coding, competing with OpenAI’s Codex, Anthropic’s Claude Code, and Google’s unclear coding platform.
• Jun 2026 - Jason Calacanis predicted that Grok, like other major AI models, would face repeated disruptions and challenges.