What it is
Grok is xAI's AI assistant, available through the Grok website and apps1. Grok Build is a coding agent that runs in the terminal. xAI's launch post calls it "a new coding agent that runs right from your terminal"2. xAI's docs say you can use it through an interactive TUI, headlessly in scripts, or through the Agent Client Protocol3.
My plan
I haven't listed my Grok tier or how many subscriptions I have yet. Here's what xAI sells.
As of November 5, 2026, xAI's October 12, 2026 post, "Introducing The X Subscription," lists these tiers4:
| Tier | Monthly US price | Included usage |
|---|---|---|
| Free | $0 | Limited |
| Plus | $8 | Base |
| Premium | $30 | 4x Plus |
| Super | $100 | 15x Plus |
| Ultra | $200 | 50x Plus |
That post says Premium carries "the benefits of SuperGrok, Cursor Pro, and X Premium+, previously $90/month combined"4. xAI's Grok FAQ still names two older subscriptions, SuperGrok and SuperGrok Heavy, and doesn't list their prices1. Grok Build's May 2026 launch was open to "all SuperGrok and X Premium Plus subscribers"2.
What it's good at
xAI says Grok Build supports plan-based review and headless mode, and runs on grok-4.7 by default2,3. The limits xAI states are that Grok Build launched as an "early beta" and that its launch post lists no usage caps or pricing for Grok Build itself2. The Grok Build docs don't say whether a subscription is required3.
What I use it for
The Grok apps and Grok Build.
The company
Elon Musk founded xAI on March 9, 2023, with a founding team of 11 researchers, though by late March 2026 all co-founders other than Musk had left. Its headquarters is in Palo Alto, California5. In March 2025 xAI acquired X Corp. in an all-stock deal, and in February 2026 SpaceX acquired xAI in a stock-only deal that made it a wholly owned subsidiary5. Its funding included a $6 billion round in December 2024 that brought total funding to over $12 billion5.
The company has been renamed since: the same article says SpaceXAI in July 2026 and SpaceX Super Intelligence in October 20265. xAI's docs now call the company "SpaceXSI"3.
Sign up
Sources
- FAQ - Grok Website / Apps. xAI, dated November 5, 2026.DocumentationRead
What it says: Covers the Grok website and apps; names two subscriptions, SuperGrok and SuperGrok Heavy, without prices; describes a shared weekly usage system rolling out in June 2026. Undated page, checked today.
- Introducing Grok Build. xAI, dated May 25, 2026.Press releaseRead
What it says: Grok Build is "a new coding agent that runs right from your terminal," an early beta open to "all SuperGrok and X Premium Plus subscribers"; supports plan-based review and headless mode. Lists no usage caps or pricing for Grok Build itself.
- Grok Build. xAI, dated November 5, 2026.DocumentationRead
What it says: Grok Build is "a powerful and extensible coding agent" usable through an interactive TUI, headlessly in scripts, or over the Agent Client Protocol; runs grok-4.7, which the page calls SpaceXSI's latest model. Does not say whether a subscription is required or give usage limits. Undated page, checked today.
- Introducing The X Subscription. xAI, dated October 12, 2026.Press releaseRead
What it says: Tiers: Free $0, Plus $8 (base), Premium $30 (4x Plus), Super $100 (15x Plus), Ultra $200 (50x Plus). Premium carries "the benefits of SuperGrok, Cursor Pro, and X Premium+, previously $90/month combined." Gives no SuperGrok price and does not mention SuperGrok Heavy.
- xAI (company). Wikipedia, dated November 5, 2026.ArticleRead
What it says: Elon Musk founded xAI on March 9, 2023, with 11 researchers; all other co-founders had left by late March 2026. Headquarters: 1450 Page Mill Road, Palo Alto. Acquired X Corp. in March 2025; SpaceX acquired xAI in February 2026 (wholly owned subsidiary); renamed SpaceXAI in July 2026 and SpaceX Super Intelligence in October 2026. December 2024 round of $6 billion brought total funding to over $12 billion. Only the first 100,000 characters were read.