Grok Build opens CLI access to SuperGrok and X Premium+ users

• testingcatalog's rollout post says Grok Build CLI is now available to SuperGrok and X Premium users, and testingcatalog's follow-up narrows that X tier to Premium+.
• Earlier posts from ai_for_success and testingcatalog's May 22 post described Grok Build as limited to SuperGrok Heavy, so this weekend's rollout expands access beyond the first gated tier.
• According to testingcatalog's feature note, the CLI is not just a coding agent, it can also search X and act as a read-only X client.
• mattlam_'s demo notes point to a more polished terminal UI than the usual agent shell, including a persistent prompt box while scrolling and a top task bar for background work.
• WesRoth's OpenCode post says xAI also shipped an OpenCode integration, giving Grok and X Premium subscribers another surface for using the model outside xAI's own terminal app.

You can read the rollout as an access story more than a new product story. testingcatalog framed the CLI as already usable for X search and read-only X browsing, mattlam_'s video notes surfaced small terminal UX choices that agent power users obsess over, and WesRoth's OpenCode post showed xAI pushing Grok into another coding surface at the same time.

The clearest change is the paywall. On May 22, ai_for_success and testingcatalog's earlier post both described Grok Build as a terminal coding agent available only to SuperGrok Heavy users.

By May 24, testingcatalog's rollout post said access had opened to SuperGrok and X Premium users, and testingcatalog's correction specified X Premium+ rather than the broader Premium bundle. WesRoth's later post matched the SuperGrok expansion and repeated that the desktop app was still expected later.

The most concrete feature detail in the evidence is that Grok Build CLI reaches beyond code generation. testingcatalog's post says the tool can search through X and use X as a read-only client, which makes it part coding agent, part terminal interface for xAI's own social graph.

That detail also explains why this rollout looks different from a plain model-access update. The subscription unlock appears tied to a product surface with its own built-in tools, not to a separate API launch.

Grok Build terminal demo

mattlam_ called out three interface choices that do not show up in the short rollout posts:

• the previous user message stays visible while you scroll
• the prompt window follows along instead of snapping you back to the bottom
• a top task bar shows a background run command

mattlam_'s follow-up added that the agent has some personality, a small point, but it fits the demo's broader pitch that xAI is treating the shell like a product surface rather than a bare wrapper around a model.

One adjacent rollout landed the same day. WesRoth's OpenCode post says xAI added a Grok integration to OpenCode, letting users bring a Grok or X Premium subscription into that environment.

That means the weekend push was not only about widening Grok Build's own tier access. xAI was also extending subscription-backed Grok usage into a third-party coding tool, separate from the CLI rollout and ahead of the still-rumored desktop app mentioned by WesRoth's later post.