xAI has launched Grok Business and Grok Enterprise, positioning its flagship AI assistant as a secure, team-ready platform for organizational use. These new tiers offer scalable access to Grok’s most advanced models — Grok 3, Grok 4, and Grok 4 Heavy, already among the most performant and most cost-effective models available in the world — backed by strong administrative controls, privacy guarantees, and a newly introduced premium isolation layer called Enterprise Vault.But it wouldn’t be a new ...