Search “free Grok API credits,” and you’ll get pages of $25 bonuses, $150 monthly grants, and promo codes. Most of them come from offers xAI ran in 2024 and 2025. Today, xAI’s billing documentation lists two ways to pay: prepaid credits and monthly invoiced billing. It advertises no standing free tier and no guaranteed signup credit.
Some developers can still get credits. A startup program funds eligible companies, X pays a rebate on X API spending, and the billing screen accepts promo codes. The documented routes come first below, followed by the claims that no longer hold up.
What xAI’s billing docs actually say
Your console offers prepaid credits or monthly invoicing. Invoicing is off by default, with a $0 invoiced spending limit, so the API rejects requests once your prepaid balance runs dry.
The same Billing page lets you redeem a promo code. It also shows any free credits the xAI team has granted your account. xAI doesn’t publish a standing code to enter there.
xAI’s pricing page has no free-credit section. Its security FAQ says xAI won’t train on your API inputs or outputs without explicit permission. That promise covers API traffic only, and consumer Grok chats fall under separate terms.
No free tier doesn’t rule out a promotional balance on your own account. Open Billing in the console before you spend a cent.
Grok for Startups: credits for funded companies
Grok for Startups gives approved companies one credit balance across Grok, Grok Build, Grok Bot and the Grok API. xAI releases 20% on approval and the other 80% once your team is up and running.
Third-party summaries of the program terms describe it as aimed at venture-backed startups with a live product. They report that amounts depend on funding, revenue, and current AI spend, and that credits default to a six-month expiry after xAI applies them. Read the official terms before you apply.
The same summaries say the credits don’t cover X Corp. services or third-party products.
Solo developers testing a side project probably won’t qualify. xAI reviews each application and publishes no standard grant size.
The $25 signup credit traces back to 2024
Plenty of guides still promise $25 for every new account, expiring after 30 days. The number has a real origin. During its November 2024 public beta, xAI gave developers $25 in monthly credits through the end of that year.
That promotion ended in 2024. Nothing on xAI’s current billing, pricing or general FAQ pages brings it back. If a starting balance shows up, enjoy it, but budget as if it won’t.
The $150 data-sharing credit has gone quiet
Older documentation described $150 a month in API credits for eligible teams that had spent at least $5. In return, teams opted in to share their API requests with xAI, and those older descriptions called the opt-in irrevocable. Dozens of 2026 guides still promote it.
xAI’s current billing, pricing, and FAQ pages don’t mention it. One pricing guide says the program ended in May 2025, and a separate review couldn’t find it in xAI’s documentation in September or October 2026. No official termination notice has surfaced, so treat it as a legacy offer at best.
Skip it unless your own Billing screen shows an opt-in. If one appears, read every line of the terms first. The credit runs out, but the data you hand over stays shared.
X API spending earns xAI credits
X’s pay-per-usage pricing page describes a rebate paid in xAI credits. You buy X API credits and link your xAI team to your X developer account. You then earn a percentage back based on your total spend in each billing cycle.
| Cumulative spend per cycle | Rebate in xAI credits |
|---|---|
| $0–$199 | 0% |
| $200–$499 | 10% |
| $500–$999 | 15% |
| $1,000+ | 20% |
X applies the rate to your whole running total but pays out only the difference from what you’ve already earned. A team that spends $200 in a cycle collects $20. The total resets to $0 when a new cycle starts.
In practice, it’s a discount on data you already buy. Teams with no use for X API data have no reason to chase it.
The two currencies trip people up. New X pay-per-usage accounts get $20 once they save an eligible payment card and make a first credit purchase. X also matches the first auto-recharge, up to $50. Both are X API credits. They expire after three months and can’t be used to pay for Grok inference.
The Playground lets you test for free
According to xAI’s API page, every account includes a Playground for trying Grok models in the console before you add credits.
That’s the one zero-cost way to judge model quality. Your own application still needs a funded API key.
Promo codes and “credit generators”
Coupon aggregators list xAI discounts, but none of those offers can be traced to xAI’s own documentation. Treat them as unconfirmed.
Searches for a Grok “free credits generator” also turn up results. xAI documents no such tool, and these sites work the same way as the scams selling fake lifetime Grok keys. Never paste your API key or X login into a page that promises free credit.
Stretching a small balance
The rates below come from xAI’s pricing page as of November 2026. Model availability varies by team and location, so confirm current figures in your console.
| Model | Input (per 1M tokens) | Output (per 1M tokens) |
|---|---|---|
| grok-4.7 | $2.00 | $6.00 |
| grok-4.3 | $1.25 | $2.50 |
| grok-build-0.1 | $1.00 | $2.00 |
At those short-context rates, $5 of credit buys at most 4 million grok-4.3 input tokens or 2 million output tokens. That’s simple arithmetic. Real workloads mix input and output, so expect less.
Long prompts change the math quickly. Once a prompt reaches 200,000 tokens, xAI bills every token in that request at the higher long-context rate, and Grok-4.7 jumps to $4 input and $12 output. Models differ on prompt size too. The gap between each Grok model’s context window and that 200K line tells you how often you’ll pay the premium. The US regional endpoint, which currently serves grok-4.7 and grok-4.6, adds another 10%.
xAI’s billing docs set a $25 minimum for each auto top-up, so confirm the current figure in Billing before you turn it on. Manual purchases give you tighter control while you experiment. Treat every prepaid purchase as money already spent.
Three levers that cut the bill
- Cached input costs a fraction of the standard rate. For grok-4.7, it’s $0.50 per million tokens.
- The Batch API takes 20% off eligible text models, including grok-4.7, grok-4.6, grok-4.5, grok-4.3, and the grok-4.20 family. The discount covers every token type: input, output, cached, and reasoning. Models missing from xAI’s list get nothing off, and most batch results arrive within 24 hours.
- Server-side tools bill separately. Web search costs $5 per 1,000 calls on top of tokens.
The default $0 invoiced limit protects you during testing. Requests stop when credits run out, so a runaway script can’t run up a surprise invoice.
Tier 0 in xAI’s rate-limit docs just means $0 total spend. It sets your starting request limits and includes no free usage.
Which route fits you
First-time testers belong in the Playground. Move to the API once your own code needs it.
A funded startup should apply to Grok for Startups before buying prepaid credits.
Starting from zero? Confirm your console balance, buy a small amount of credit, and start with a cheaper model like grok-4.3.
Teams already paying for X API data can link the two accounts and collect the rebate once cycle spend passes $200.
If your prompts carry sensitive data, avoid any program that trades your data for credit.
Whatever any blog post claims, this one included, the Billing and Credits screen in your own console decides what your team can claim today.
FAQs
Q. Can I get a Grok API key for free?
xAI’s docs don’t say whether new teams start with a balance. They do say the API rejects requests once prepaid credits run out at the default $0 invoiced limit. Open Billing in the console to confirm your balance.
Q. Is there a Grok API promo code?
The billing screen accepts promo codes, but xAI publishes no standing code. Third-party coupon listings remain unconfirmed.
Q. Does Grok have a free tier?
xAI’s API docs describe no standing free API tier. The Playground lets you try models, and the pricing page mentions a free tier for Grok Build, xAI’s coding agent. Neither one is a general API allowance.
Q. Who qualifies for Grok for Startups?
xAI reviews each application, verifies the company and its funding, and sizes credits to the startup’s stage and current usage. Third-party summaries describe the target as venture-backed startups with a live product, so read xAI’s terms before applying.
Q. How much does the Grok API cost?
Grok 4.7 costs $2.00 per million input tokens and $6.00 per million output tokens at short context. Tools, long-context requests, and the US regional endpoint cost extra.
Related: Grok Not Loading Conversations? 7 Fixes That Work
| Disclaimer: This article is for informational purposes only. We are not affiliated with or endorsed by xAI or X. API pricing, credits, and promotional offers may change. Always verify the latest details through official xAI documentation. |
