How to Use Grok on X: Features, Limits and Privacy

To use Grok on X, tap the Grok icon in the navigation bar of the X app or on x.com, type a question, and send it. You can also ask Grok about a specific post with the Grok icon on that post, or mention @grok in a reply to get a public answer in the thread. Grok is free to try with daily limits; paid plans give you more usage and features such as image generation.

Grok is the AI assistant built into X, made by the same group of companies. It can answer questions, explain posts, search recent posts and the web, and help you write. This guide covers where to find it, what it can do, what free and paid accounts get as of October 2026, how X uses your data for Grok and how to opt out, and how to get better answers.

What is Grok on X?

According to X’s help center, Grok is an AI assistant that helps with tasks like answering questions, solving problems and brainstorming. It’s powered by large language models built by xAI, the AI company that is now part of SpaceX. The help center describes it as designed to answer almost any question “with a touch of wit and humor.”

What makes Grok different from a general chatbot is its access to X. X’s help center says Grok can decide to search public X posts and run a real-time web search when it answers, so it can respond to questions about breaking news and current conversations, not just things it learned in training.

Grok also lives outside X, on grok.com and in its own apps. The same account and paid plan can cover both, but this guide focuses on using it inside X.

Where to find Grok on X

X’s help center says Grok is available on X for iPhone, Android and the web, in every country where X is available.

In the X app (iPhone and Android)

1. Open the X app.
2. Tap the Grok icon in the bottom navigation bar.
3. Type your question or tap one of the suggestions, then send it.

On x.com

1. Go to x.com and log in.
2. Click Grok in the left-hand navigation menu.
3. Type your question or start from a suggestion.

Your past conversations are saved in the Grok tab so you can pick them up later. If you don’t see the Grok icon, update the app; X sometimes moves navigation items between versions.

Three ways to ask Grok on X

1. The Grok tab

This is a private chat between you and Grok, like any AI chatbot. Use it for general questions, writing help, summaries and anything you don’t want to post publicly.

2. The Grok icon on a post

Many posts show a small Grok icon. Tapping it asks Grok to explain the post: what it refers to, the background, and what’s in any attached image. It’s handy for jokes, memes, jargon and news posts that assume context you don’t have. From there you can ask follow-up questions in the chat.

3. Mentioning @grok in a reply

Since March 2025, you can tag @grok in a reply and ask a question about the post you’re replying to, according to TechCrunch. Grok answers in the thread.

Remember that this route is public. Your reply and Grok’s answer are ordinary posts that anyone who can see the thread can read, quote and repost. Ask private questions in the Grok tab instead.

What Grok can do on X

Task	How to ask
Answer questions with recent info	Ask in the Grok tab; Grok may search X posts and the web
Explain a post or meme	Tap the Grok icon on the post
Summarize a long thread or topic	“Summarize the main arguments in this thread”
Translate a post	“Translate this post into English and explain any slang”
Help you write	Drafts, hooks, replies, bios, thread outlines
Understand images	Attach an image and ask what it shows
Create or edit images	Paid plans; ask Grok to generate an image from a description
Talk by voice	Voice input in the app, where available

For writing help, Grok is useful for first drafts and rewrites, but read everything before you post. If you’re drafting a thread, our guide on how to write a thread on X covers the structure, and the Twitter character limit guide explains how much fits in one post.

Image generation and editing

Grok can generate images from a text description and edit existing images. On X, this has been restricted. In January 2026, after reports of the tool being used to create sexualized edits of real people, Bloomberg and CNN reported that Grok on X began limiting image generation and editing to paying subscribers. In March 2026, news reports described a new option on iPhone that lets you block Grok from modifying images you upload, found in the image editing menu when you attach a photo. X hasn’t documented it in its help center, so it may not appear for everyone.

Because these rules have changed several times this year, what a free account can do with images on X may differ from what you read elsewhere. If Grok asks you to subscribe when you request an image, that feature isn’t included in your plan.

Grok on free vs paid accounts

Grok’s limits are set by your plan. Neither X nor xAI publishes exact message counts, and the numbers have changed often, so we won’t quote a figure that may already be out of date. Here’s what the official pages say as of October 2026:

Plan	What X and xAI say you get
Free X account	Daily access to Grok, with free-tier limits on chat and voice
X Premium Basic	Premium features on X; no extra Grok limits are listed
X Premium	Increased usage limits on Grok
X Premium+	SuperGrok: higher limits on the latest Grok models, Grok Bot, image and video generation, voice mode
The X Subscription (new)	One weekly usage pool shared between Grok and Cursor. Premium has 4x the Plus allowance, Super 15x and Ultra 50x

The X Subscription launched on October 12, 2026 and is where new customers start. Plus costs $8 a month and Premium $30 a month in the US; Grok Bot starts at the Premium plan. When a paid plan’s weekly pool runs out, xAI’s FAQ says paid features pause until it resets, while the free limits on chat and voice stay available. Existing X Premium subscribers keep their current plan unless they switch. Our guide to the X Premium price compares every tier.

How X uses your data for Grok, and how to opt out

This is the part most people skip, and it matters. According to X’s help center:

• Training: X may share your public X data with xAI to train and fine-tune Grok and other AI models. That includes public posts, engagement on them, public Spaces and your public profile, plus your conversations with Grok on X.
• Personalization: X may use your profile, posts, engagement and interests, including how you use Grok, to personalize Grok’s answers. Voice input may be transcribed and shared with xAI.
• No sale of data: X’s help center says neither X nor xAI sells your data.

Opt out of AI training

1. Open Settings and privacy, then Privacy and safety.
2. Scroll to Data sharing and personalization and select Grok & Third-party Collaborators.
3. Under Data Sharing, uncheck the box that allows your public data and your interactions, inputs and results with Grok and xAI to be used for training and fine-tuning.

You can keep using Grok after opting out. Two caveats from X’s help center: if you rate a Grok answer with the thumbs up or down buttons, that conversation may still be used for training, and the opt-out doesn’t stop Grok-powered X features, such as recommendations, from learning through normal use.

Turn off Grok personalization

In the same Grok & Third-party Collaborators screen, uncheck Allow X to personalize your experience with Grok under Grok Personalization.

Delete your Grok history

1. Go to Settings and privacy, then Privacy and safety.
2. Open Data sharing and personalization, then Grok.
3. Choose Delete Conversation History and confirm.

X says deleted conversations are removed from its systems within 30 days, unless it has to keep them for security or legal reasons.

Keep your posts out of training entirely

X’s help center says protecting your posts keeps them out of Grok training and out of Grok’s answers to other people. It also limits who can see you, so it’s a trade-off; our guide on how to make your X account private explains what changes.

Don’t share secrets with Grok. X’s help center explicitly asks you not to share personal data or any sensitive or confidential information about yourself or others in Grok conversations. That includes passwords, ID numbers, health details and private messages.

One more privacy note: if you add @grok to an X Chat group, the help center says X and the AI company get access to every message sent in that chat from the moment Grok is added until it’s removed, even though Chat is otherwise end-to-end encrypted.

Tips for better answers from Grok

• Give context. “Explain this post to someone who doesn’t follow crypto” works better than “explain.”
• Ask for sources. When Grok uses X or web results, ask which posts or pages it relied on, then open them yourself.
• Set a time frame. “What are people saying about the launch in the last 24 hours?” focuses the search.
• Say what format you want. A table, five bullets, a 280-character post, or a short paragraph.
• Iterate. Ask it to shorten, change the tone, or try again with a different angle rather than starting over.
• Use it to draft, not to post. Edit what Grok writes in your own voice. Readers can usually tell, and a generic AI reply rarely earns engagement. Our guide on how the X algorithm works explains why replies and conversation matter.

Limitations to keep in mind

X’s help center is direct about this: Grok “may confidently provide factually incorrect information,” summarize things wrongly or miss context, and X encourages you to verify what it tells you. In practice:

• Real-time search cuts both ways. Grok can pick up fast-moving rumors from X posts along with real reporting. On breaking news, check the original source.
• “@grok is this true?” isn’t a fact-check. A Grok reply in a thread is an AI answer, not a verified ruling. Community Notes are written and rated by people; our explainer on X Community Notes covers how they work.
• Limits and features change often. Image tools, usage caps and plan names have all changed in 2026. If something described here doesn’t match your app, the app is the current version.

Key takeaways

• Open Grok from the Grok icon in the X app’s navigation bar or the side menu on x.com.
• Ask about a specific post with its Grok icon, or tag @grok in a reply for a public answer.
• Free accounts get daily Grok access; paid plans add higher limits, and news reports say image generation on X has been limited to paying subscribers since January 2026.
• Opt out of training under Privacy and safety, Data sharing and personalization, Grok & Third-party Collaborators.
• Delete your Grok history in the Grok section of the same settings.
• Never share sensitive personal information with Grok, and verify important answers yourself.