Processing a batch of 100 customer support tickets
Each ticket requires 500 input tokens and 200 output tokens. Cost per ticket: (500/1,000,000 * $0.25) + (200/1,000,000 * $1.00) = $0.000125 + $0.0002 = $0.000325. Total for 100 tickets: $0.0325.
Grok API: What it costs
Understand exactly how much each request costs and how prepaid credits keep your spend predictable. We charge per token with no monthly fees, so you only pay for what you process.
No subscription. Prepaid credit never expires.
$0.25per 1M input tokens
$1.00Output tokens / 1M
100,000token context
$0.50trial credit
300requests per minute
Cost calculator
Worked examples
Running a single complex reasoning task
A long prompt with 10,000 input tokens and a detailed 1,000 token response. Cost: (10,000/1,000,000 * $0.25) + (1,000/1,000,000 * $1.00) = $0.0025 + $0.001 = $0.0035.
Streaming a conversational session
50 turns with 300 input tokens and 150 output tokens per turn. Total input: 15,000 tokens. Total output: 7,500 tokens. Cost: (15,000/1,000,000 * $0.25) + (7,500/1,000,000 * $1.00) = $0.00375 + $0.0075 = $0.01125.
Token Pricing
We charge strictly on a per-token basis for both input and output. Input tokens cost $0.25 per 1M tokens, while output tokens cost $1.00 per 1M tokens. This transparent structure ensures you know exactly what you are paying for. There are no hidden fees, no per-request charges, and no minimums beyond the top-up amount. You can estimate your costs using the calculator above or by applying the standard formula to your expected token volume.
Prepaid Credits
All usage is deducted from your prepaid balance. You can top up with as little as $10 using crypto (USDT or USDC). Your API key remains active as long as your balance is sufficient to cover the request. If your balance reaches zero, you can regenerate your key or add funds to continue. There is no monthly subscription fee, and paid credit never expires, so you can use it whenever you need it.
Bonus Credit Tiers
We reward larger deposits with bonus credit. When you top up $50, you receive a 5% bonus added to your balance. For a $100 top-up, you get a 10% bonus. This effectively lowers your effective cost per token. There is no maximum limit on how much you can deposit, allowing you to secure the best rate for your projected usage volume.
Trial Offer
New accounts receive $0.50 in trial credit, valid for 7 days. No credit card or phone number is required to sign up and start testing. This allows you to verify integration, test streaming, and evaluate tool calling without any financial commitment. The trial credit is one per person and cannot be renewed. Once the trial expires or the balance is depleted, you can top up to continue using the API.
Included with every key
One price list, one set of limits, all features on every key.
| Spec | Value |
|---|---|
| Structured output | response_format: {"type": "json_object"} |
| Max context | 100,000 tokens (prompt + completion together) |
| Max output | up to 16,000 tokens per request (default 2,048) |
| Function calling | Yes — tools, tool_choice; replies carry tool_calls, also when streaming; send results back as role: tool |
| Rate limit | 300/min per key |
| Parallel requests | up to 8 in parallel per key |
| Bonus credit | +5% from $50, +10% from $100 |
| Subscription | no monthly fee; paid credit does not expire |
| Top-up | crypto: USDT on TRON or USDC on Base, $10–$500, any whole sum |
| Token prices | input $0.25 / 1M tokens, output $1.00 / 1M tokens |
| Trial credit | $0.50 for 7 days, no card |
Questions and answers
Does my prepaid credit expire?
No, paid credit never expires. You can top up today and use the funds months later without any time limit.
What happens if my balance runs out?
Requests will fail if there are insufficient funds. You can top up your balance at any time, or regenerate your API key to start fresh with a new balance.
How do I pay for my API key?
You can top up using crypto (USDT or USDC). The minimum top-up amount is $10.
Is there a maximum limit on how much I can deposit?
No, there is no maximum limit. You can deposit any amount, and higher tiers offer bonus credit to reduce your effective cost.
Your key is one form away
Create an account, copy the key, change the base URL. That is the whole setup.
