xAI is launching an aggressive, time-limited discount on its premium SuperGrok Heavy subscription. New and existing users can snag the service for $99 a month — down from $300 — for the next six months. That's a 67 percent cut.
The Heavy tier is the only way to access Grok Build, xAI's command-line programming tool that entered public beta last week. The tool emphasizes concurrent multi-agent subagents and native MCP extensions.
