[xAI Launches Price War, Aggressively Promotes Grok Build, Slashing $300 to $99] According to monitoring by 动察 Beating, xAI has introduced an aggressive limited-time subsidy strategy for its top-tier subscription service, SuperGrok Heavy. New and existing users can enjoy a massive discount of 67%, dropping the price from $300/month to $99/month over the next six months. The Heavy subscription is currently the only requirement to access xAI's command-line programming tool, Grok Build. This tool, which opened for public testing last week, focuses on concurrent multi-subagents and native MCP extensions. [Original Link]