TL;DR: The Short Answer
Yes — Grok is free. xAI (now also branded SpaceXAI) offers a genuine $0 Free tier at grok.com, on iOS and Android, and inside the X app — no credit card, no expiry. You get chat, real-time web and X search, and Voice mode, but with rolling usage limits and no access to the flagship Grok 4.6/4.7 model, DeepSearch, or full image/video generation. “Unlimited free Grok” does not exist officially; sites promising it are usually unsafe wrappers or scams. For developers, the API is pay-per-token with no permanent free tier, but three legitimate free routes exist: new-account trial credits, OpenRouter’s free grok-4-fast:free variant, and Puter.js’s User-Pays model. This guide covers exactly what you get for free, what every paid tier costs, how to stretch your allowance, and which “free Grok” sites to avoid.
Is Grok Free? What the Free Tier Actually Gives You
Let’s start with the official answer, because most guides get this wrong. xAI’s official pricing page lists a Free plan at $0/month right at the top — “Get to know Grok and its capabilities for free within generous limits.” It is not a trial, and it does not expire. It includes:
- Basic chat on grok.com, the Grok mobile apps (iOS and Android), and inside the X app
- Real-time web search and X (Twitter) search — Grok’s signature feature
- Voice mode for spoken conversations
- Connectors and SOC 2 Type I & II compliance
- A small daily allowance of Grok Imagine image generations
What the free tier does not include: the flagship Grok 4.6/4.7 model in Expert/Heavy mode (you get the lighter Grok 3 / Fast mode, plus a limited Grok 4 trial), DeepSearch, priority speed, high-rate usage, or full HD image/video generation. xAI deliberately does not publish the exact free message limit — it shifts with server load and the company changed its limit system in mid-2026. User reports as of late 2026 cluster around 10 messages per rolling 2-hour window on Grok 3, roughly 5 messages per 12-hour window on the Grok 4 trial, and 3–10 image generations per day resetting at midnight UTC. Treat any specific number as approximate, because xAI tightens and loosens these caps without announcement.
Bottom line: for casual questions, quick writing, and occasional use, Grok is genuinely free. For daily professional use, you will hit the ceiling — and that is by design.
How to Use Grok for Free Right Now (Step by Step)
Getting started takes about two minutes:
- Go to grok.com (or download the Grok app for iOS or Android). You can also open the X mobile app and tap the Grok icon.
- Create a free account with an email, X account, or Google sign-in. No credit card is required.
- Start chatting. Ask questions, paste text, or toggle real-time search for up-to-the-minute info.
- Watch for the cooldown notice. When you hit the free cap, Grok shows a timer rather than cutting you off mid-conversation.
- Use Voice mode (the microphone icon) for hands-free questions — it counts against the same free allowance.
That is the only official, safe, zero-cost route. Apidog’s guide on how to use Grok for free walks through the same signup flow and confirms no payment details are needed for the basic tier.
Every Grok Paid Tier, Priced (So You Know When Free Isn’t Enough)
If you hit the free ceiling often, here is exactly what upgrading costs, verified against xAI’s pricing as of late September 2026:
| Plan | Price / month | What you get | Best for |
|---|---|---|---|
| Free | $0 | Grok 3/Fast + limited Grok 4 trial, real-time search, Voice, basic images | Casual users |
| X Premium (Basic from $3 / Premium $8) | $3–$8 | Higher Grok limits inside X, blue checkmark, discount on SuperGrok | X users who want more Grok |
| SuperGrok Lite | $10 | Standalone Grok, higher limits, lighter features | Regular users on a budget |
| SuperGrok | $30 ($300/yr) | Flagship Grok 4.6/4.7, DeepSearch, much higher limits, Think mode | Daily & power users |
| X Premium+ | $40 | Includes SuperGrok-level access plus ad-free X and creator tools | Heavy X + Grok users |
| SuperGrok Plus | $100 | 1080p video generation, far higher usage, priority access | Heavy Imagine/Voice/Build users |
| SuperGrok Heavy | $300 | Highest limits, multi-agent at scale, includes X Premium+ | Teams & extreme power users |
| Business | $30/seat | Seat management, consolidated billing, analytics | Small teams |
Two money tips worth knowing: X Premium+ at $40 already includes SuperGrok-level access, so if you are a heavy X user it can be better value than buying SuperGrok standalone. And SuperGrok at $300/year saves about 17% versus paying monthly. If you only need Grok occasionally, the free tier plus a free alternative (Gemini, ChatGPT free, Claude free, or DeepSeek) for overflow is almost always cheaper than any subscription.
Is the Grok API Free? What Developers Need to Know
Short answer: No — the xAI API has no permanent free tier, but you can use Grok models for free in three legitimate ways.
The API is usage-based, billed per token. Per xAI’s official API page, the current flagship grok-4.7 (released September 20, 2026) costs $2 per 1 million input tokens and $6 per 1 million output tokens for prompts under 200K tokens, with a 500,000-token context window, text-and-image input, and a knowledge cutoff of May 2026. Above 200K tokens the rates step up, and cached input costs $0.50/1M. Older models like grok-4.3 cost less (about $1.25/1M input), so picking the right model cuts your bill. Rate limits are tiered by cumulative spend since January 1, 2026: Tier 0 ($0) allows roughly 30–60 requests per minute, enough for testing and light production — you just pay for tokens consumed.
The three legitimate free routes for developers:
- New-account trial credits. xAI grants free credits to new API sign-ups (commonly around $25, often expiring monthly and not rolling over). Build and test at zero cost until they run out.
- OpenRouter free variant. OpenRouter carries
grok-4-fast:free— a genuinely free, rate-limited Grok model variant you can call with no payment, useful for prototyping when you do not need full Grok 4 reasoning depth. - Puter.js User-Pays model. Puter’s free, unlimited Grok API tutorial explains how to embed Grok (including grok-4.6/4.7) in your app with no API key, no server, and no bill to you — each end user covers their own usage. It is free for the developer, not truly unlimited for any single user, but it removes your cost entirely.
Honest caveat: any site advertising “free unlimited Grok API keys” is almost certainly reselling stolen or shared keys, which get revoked fast and can get your account banned. Stick to the three routes above.
Grok Free vs. Other Free AI Chatbots: Which Should You Use?
Grok’s free tier is limited, but it is one of several strong free options. Here is how they compare:
| Free tool | Free allowance | Unique strength | Weakness vs. Grok |
|---|---|---|---|
| Grok (free) | ~10 msgs/2 hrs | Real-time X/web search, uncensored tone | Low cap, no flagship model |
| ChatGPT (free) | Generous (GPT-5 mini/oss) | Best all-rounder, plugins | No real-time X data |
| Gemini (free) | Generous, image input | Google ecosystem, long context | More filtered tone |
| Claude (free) | Limited daily | Best writing & coding | Strictest content policies |
| DeepSeek (free) | Effectively unlimited chat | Strong reasoning, free API | Weaker real-time search |
| Perplexity (free) | ~5 deep searches/day | Cited, sourced answers | Not a creative-writing tool |
The smart move is a hybrid workflow: use Grok free for breaking news, X-sourced research, and edgier answers; use Gemini/ChatGPT/DeepSeek free for routine drafting, math, and coding. A paraphrasing tool or AI text summarizer can handle rewrites and summaries without touching your Grok quota at all.
How to Stretch Your Free Grok Allowance Further
You cannot remove the free limit, but you can make every message count so you rarely hit it:
- Batch your questions. Instead of five separate prompts, combine related requests into one well-structured prompt. Good prompt engineering habits directly reduce how many turns you need.
- Use the right mode. Fast/Grok 3 is lighter and uses less of your allowance than Expert/Grok 4. Reserve Grok 4 for hard reasoning, coding, and complex writing; use Fast mode for simple lookups and edits.
- Hybrid with free alternatives. As the table above shows, you have genuinely unlimited options for routine work. Save Grok’s scarce messages for what only it can do.
- Start fresh chats for new topics. Long contexts consume more compute per message; a new conversation keeps each response lighter.
- Avoid image generation on free. Image generations burn the daily cap fast. Generate text prompts with Grok and use a dedicated free image tool instead.
- Check length before you send. A word counter or character counter helps you trim bloated prompts — shorter prompts cost fewer tokens and get faster answers.
“Unlimited Free Grok” Wrapper Sites: What They Are and Why to Avoid Them
Search for “grok free unlimited” and you will find dozens of third-party sites promising no-login, unlimited Grok 4. Here is the reality:
- They are not affiliated with xAI. Most are unofficial wrappers that either proxy requests through paid accounts or run a cheaper model and label it “Grok.”
- They can read everything you type. Using one to summarize a contract, paste personal data, or discuss work secrets means handing that data to an unknown operator.
- They disappear constantly. When xAI detects abuse, the wrapper’s keys get revoked and the site vanishes — often with your chat history.
- Some are outright scams, harvesting emails, pushing malware, or charging for a “premium” that does not exist.
The safe rule: if it is not grok.com, the official Grok app, the X app, or a documented API/SDK (like Puter.js or OpenRouter), do not type anything private into it. For casual, non-sensitive questions they may work, but treat them as disposable and untrusted.
Three Myths About Free Grok, Debunked
- Myth: “You need X Premium to use Grok.” False. Grok has been free at grok.com with a basic account since 2024. Premium only raises limits and unlocks the flagship model.
- Myth: “Free Grok is unlimited if you use the mobile app.” False. The same account-based limits apply across web, iOS, Android, and X. Switching devices does not reset your quota.
- Myth: “The Grok API is free for students.” Not officially. xAI does not run a student program as of late 2026; use trial credits or OpenRouter’s free variant instead.
When Paying for Grok Is Actually Worth It
Most people never need to pay. Upgrade only if one of these is true:
- You hit the free cooldown several times per week and it interrupts real work.
- You need DeepSearch or the flagship Grok 4.6/4.7 model for serious research or coding.
- You use Grok Imagine (image/video generation) regularly — the free daily cap is tiny.
- You need priority speed during peak hours, or API access for a product.
If none of those apply, the free tier plus a second free chatbot will cover you. A $30/month SuperGrok subscription costs more than a year of most alternative tools, so run free for a week and measure how often you actually hit the wall before paying.
Frequently Asked Questions
Is Grok free to use?
Yes. xAI offers a permanent Free tier at $0/month on grok.com, the mobile apps, and inside X. It includes chat, real-time web/X search, and Voice mode, but with rolling usage limits and without the flagship model or DeepSearch. It is not a trial and does not require a credit card.
Is there a free version of Grok with no limits?
No. Every official free route has usage caps. “Unlimited free Grok” sites are unofficial wrappers that are often unsafe or short-lived. The closest thing to free unlimited access is Puter.js’s User-Pays model for developers, where end users cover their own API costs, or OpenRouter’s rate-limited free Grok variant.
How many free Grok messages do I get per day?
xAI does not publish an exact number. As of late 2026, users report roughly 10 messages per rolling 2-hour window on Grok 3/Fast mode, about 5 messages per 12-hour window on the Grok 4 trial, and 3–10 image generations per day. Limits shift with server demand, so treat these as estimates.
Is Grok free on X (Twitter)?
Yes — a free tier of Grok is available inside the X app in most regions, with the same limits as grok.com. X Premium ($3–$8/month) raises those limits and gives a discount on SuperGrok. X Premium+ ($40/month) includes SuperGrok-level access.
Is the Grok API free?
No. The xAI API is pay-per-token (grok-4.7: $2/1M input, $6/1M output for prompts under 200K tokens). New accounts receive free trial credits, OpenRouter offers a free grok-4-fast:free variant, and developers can use Puter.js’s User-Pays model at zero cost to themselves. There is no permanent free API tier.
Can I use Grok 4 for free?
Partially. Free users get a limited Grok 4 trial allowance (about 5 messages per 12-hour window as of late 2026). Unlimited Grok 4.6/4.7 requires a paid SuperGrok plan starting at $30/month.
Are free Grok wrapper sites safe?
Generally no. They are unaffiliated with xAI, can read everything you type, often run a different (cheaper) model, and frequently disappear or get banned. Only use them for non-sensitive, throwaway questions — never paste personal, financial, or work data.
Which is better: free Grok or free ChatGPT/Gemini?
Grok’s unique edge is real-time X/web search and its less-censored tone. For routine writing, math, and coding, free ChatGPT, Gemini, and DeepSeek are often stronger and have higher free limits. Use Grok for breaking news and X-sourced research; use the others for everything else.
Final Verdict
Grok is genuinely free — xAI’s $0 tier is real, permanent, and enough for casual use — but it is not unlimited, and anyone promising otherwise is selling something. Use the official free tier, batch your prompts to stretch the allowance, and pair it with other free chatbots for overflow. For developers, start with API trial credits or OpenRouter’s free Grok variant before opening your wallet, and only pay for SuperGrok if you regularly hit the cooldown or need the flagship Grok 4.7 model.
