xAI's Grok model just ticked up to version 4.6, and Elon Musk is pointing users toward two specific platforms to get the most out of it: the Grok Build harness and the Cursor app. The recommendation is a signal — not every interface surfaces Grok's full capability equally.
Grok Build is xAI's own agentic harness, designed for tasks that go beyond a single prompt — think multi-step workflows, tool use, and code execution. Cursor is a popular AI-native code editor that integrates frontier models directly into a developer's environment. Musk's framing of both as the path to "max usefulness" suggests 4.6 is particularly strong on reasoning and coding tasks rather than casual chat.
The version bump from 4.5 to 4.6 is iterative rather than a generational leap, but incremental Grok releases have historically carried meaningful improvements in instruction-following and context handling. If you've been running Grok through the standard grok.com chat interface, it's worth spinning up one of the recommended platforms to see whether the difference is noticeable for your workflow.
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Sources & reporting notes
The links below identify the material source records used for this report.
- @elonmusk on X (2026-08-21T21:33:15.000Z) — Direct source
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