Calculate AI Costs
Want to know approximately how much using AI costs? With this AI cost calculator, you can calculate the cost of a prompt. Paste your prompt into the calculator and the number of characters, words, and tokens will be estimated automatically. The expected AI output is also included in the calculation.
Then enter the price per million input and output tokens to see straight away approximately how much an AI request costs. You can also calculate the cost of usage per day and per month.
How much does an AI prompt cost?
The cost of AI depends, among other things, on the number of tokens processed. An AI model processes both the text you enter and the response generated by the model. These are usually calculated separately as input and output tokens.
Our AI cost calculator lets you estimate these costs. You do not need to count tokens yourself: paste your prompt into the text field and the calculator automatically estimates the number of input tokens and the expected output.
How do you calculate AI costs?
The price of an AI request consists of two parts:
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Input tokens: the text you send to the AI model.
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Output tokens: the text returned by the AI model.
The costs are calculated based on the price per million tokens.
The basic calculation is:
Input cost = input tokens ÷ 1.000.000 × input price
Output cost = output tokens ÷ 1.000.000 × output price
The input and output costs are then added together to determine the estimated cost per AI request.
What are AI tokens?
A token is a piece of text processed by an AI model. A token can be a word, part of a word, a punctuation mark, or another piece of text.
Therefore, the number of tokens is not exactly the same as the number of words. For example, a text of 100 words does not automatically contain 100 tokens.
The exact number of tokens depends, among other things, on the AI model used and the language in which the text is written.
That is why our calculator uses an estimate of the number of tokens. The result is intended to provide a quick insight into the possible cost of an AI request.
How is AI output estimated?
With a prompt, we naturally do not know in advance exactly how long the AI response will be. A short question may produce a short answer, while a request to write a detailed article may result in many more output tokens.
That is why the calculator automatically estimates the expected output based on the length of your prompt.
This output is explicitly an estimate. The actual response from an AI model may be shorter or longer. As a result, the actual costs may differ from the calculated costs.
How much does AI cost per prompt?
The cost per prompt depends on several factors. The most important are:
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the number of input tokens;
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the number of output tokens;
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the price of the AI model used;
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the number of AI requests.
A short prompt with a short response may therefore cost only a fraction of a cent. With long prompts and detailed responses, the costs can be considerably higher.
Want to use AI several times a day? You can also enter the number of requests per day in the calculator. The calculator then calculates the estimated cost per day and per month.
How much does AI cost per month?
The monthly cost of AI mainly depends on how often you use AI and how much text is processed each time.
Suppose an AI request costs an average of €0,01 and you use AI 20 times per day. Then the estimated cost is:
20 × €0,01 = €0,20 per day
Over 30 days, this amounts to:
€0,20 × 30 = €6,00 per month
With the calculator, you can easily make this calculation for your own usage.
Why do AI prices differ?
Not every AI model has the same price. Providers may charge different rates for input and output tokens. More powerful or advanced models may also be more expensive than smaller models.
Therefore, always check the current price of the AI model you use and enter it into the calculator.
The prices in this calculator can be adjusted manually. This allows you to use the calculator for different AI models and providers.
Calculate AI costs for your own use
With this calculator, you can quickly get an indication of the cost of an AI prompt. You do not need to make a complicated token calculation. Paste your text into the calculator, enter the current token prices, and view the estimated costs.
The calculator is suitable for both occasional AI use and people who make many AI requests every day.
Important to know
The results of this calculator are estimates. The actual number of tokens and final costs may differ. In particular, the length of the AI output cannot be determined exactly in advance.
Therefore, use the calculation as a practical indication of costs, not as an exact invoice calculation.
