Seeing whether it can navigate your repo
Grok Free
You have a real project and a terminal, and you want to know whether the thing is useful before it is attached to a card.
$0/mo
Costs nothing, and unusually for this section that is not a trial with a clock on it. The free plan is a standing tier that carries Grok Build, so there is no day on which access lapses. What there is instead is an undisclosed ceiling: the vendor describes free access as limits, never as a quantity, so the only way to learn how far it goes is to run it until it stops.
One developer, most working days
SuperGrok
Grok Build is now in the loop for real work — reading code, running tests, making edits — and it stopped being an experiment a while ago.
$30/mo
The entry paid tier, and the first that carries a weekly pool. Worth understanding what you are buying: not a Grok Build allowance but a general one. The same pool answers your chat questions and renders your images, and the vendor says explicitly that a long coding task draws far more from it than a chat message does. A week of heavy agent work is a week of not generating video.
Long sessions and parallel subagents
SuperGrok Plus
You run plans across large trees and let subagents work in their own worktrees, so several contexts are alive at once.
$100/mo
The vendor's phrase for this tier is significantly higher usage across Chat, Imagine, Voice and Build, plus priority access at peak times. Significantly higher than what remains the unanswered question: both this tier and the one below it are described in comparatives against each other, never in a unit, so the step up cannot be sized before you buy it.
The ceiling, for people who keep hitting one
SuperGrok Heavy
You exhausted the pool on the tier below more than once and would rather not think about it again.
$300/mo
The top individual tier. A detail worth knowing before you go looking: its price does not appear on the pricing page at all. It is published on the vendor's Grok Bot page instead, inside an animated counter whose visible text lags the value it is animating toward — which is a strange place to keep the number for the most expensive thing an individual can buy.
A team with code it cannot leak
Grok Business
Several engineers, a private codebase, and somebody who has to answer for where the source goes.
$30/seat/mo
The reason to be on this row is not the seat management — it is the training row. On every individual tier, up to and including the most expensive one, model training is a setting the user has to find and switch off. Business is the first tier where not training on your content is the vendor's commitment rather than your checkbox. For a tool pointed at a private repository that is the whole argument.
CI, scripts and anything unattended
xAI API key
Grok Build runs headless in a pipeline, reviewing diffs or triaging failures, with no one watching the terminal.
At model rates
A key detaches you from the pool entirely and is the only route with a published rate. It also exposes the rule that matters most to an agent: crossing 200k prompt tokens re-prices the whole request at the higher tier, not just the tokens past the line. An agent accumulating repository context walks toward that threshold all session, and steps over it once — after which every token in that request, including the first, bills at the higher rate.