# What Is Grok on X?

Source: https://trygrowx.app/glossary/grok (updated 2026-11-04)

Grok is the AI assistant made by xAI and built into X. You can open it from X's navigation to ask questions, brainstorm and get explanations, or tag @grok in a reply to ask it about the post you are reading.

X describes it on its [About Grok help page](https://help.x.com/en/using-x/about-grok). Replying to Grok by tagging it arrived in March 2025, as [TechCrunch reported](https://techcrunch.com/2025/03/07/x-now-lets-you-query-grok-by-mentioning-it-in-replies).

## Access and plans

Free accounts get a limited daily allowance. Since 12 October 2026, new buyers get more Grok usage through The X Subscription, which bundles Grok, Cursor and X Premium benefits, with paid tiers sharing one weekly usage pool, according to the [Cursor announcement](https://forum.cursor.com/t/introducing-the-x-subscription/174450). Daily limits change often and sources disagree on the exact numbers, so check your own account.

X may share public data and your Grok interactions with xAI. The help page explains how to opt out of having your data used for training.

## Example

You see a thread full of jargon about interest rates. You reply "@grok explain this simply" and Grok answers in the replies, where everyone reading the thread can see it.

## Why it matters for growth

- **Fast research.** Ask Grok to summarise a long thread or explain a term before you reply, so your reply adds something real.
- **Public Grok replies are visible.** Asking Grok under someone else's post puts the exchange in their replies. Keep it relevant.
- **Your posts may be summarised.** Clear, factual posts are easier for Grok and readers to represent correctly.

Grok can be wrong. Check facts and numbers before you repeat them in a post.

## Related terms

- [X Premium](https://trygrowx.app/glossary/x-premium)
- [Algorithm](https://trygrowx.app/glossary/algorithm)
- [Mention](https://trygrowx.app/glossary/mention)
- [Reply](https://trygrowx.app/glossary/reply)
- [Community Notes](https://trygrowx.app/glossary/community-notes)

## Frequently asked questions

### Is Grok free on X?

There is a limited free allowance. Paid X plans include more usage.

### Does Grok rank my posts?

X's published For You ranking code uses a model based on Grok to predict engagement. See [algorithm](https://trygrowx.app/glossary/algorithm) for details.

Last checked November 2026.

Turn your research into a finished draft with the [post generator](https://trygrowx.app/tools/post-generator).