xAI has announced a significant price reduction for its SuperGrok Heavy subscription, cutting the monthly cost from $300 to $99 for a limited six-month period. This aggressive subsidy strategy is available to both new and existing users. The SuperGrok Heavy subscription is the exclusive access point for xAI's Grok Build, a command-line programming tool that recently entered public beta. Grok Build offers features such as concurrent multi-subagents and native MCP extensions, enhancing its appeal to developers.