- API Price Calculator
OpenAI's API Price Calculator
Calculate OpenAI API costs instantly: select a model, enter your word count, and see your price.
Key Features:
Model Selection:
Users can choose from a list of available OpenAI models.Word Count Input:
Users enter the number of words they plan to process.Automatic Token Calculation:
The calculator uses a conversion factor of 1 word = 1.33 tokens (rounded up) to determine the number of tokens.Cost Calculation:
The cost is computed by multiplying the token count by the model-specific price per token.Responsive Results Display:
The cost and token count are shown inline within a styled results container for easy readability.
How it Works:
1. User input
- Select a model.
- Enter the number of words in the “Number of Words” field.
2. Token Conversion:
- The calculator converts the word count to tokens using the formula:
Tokens = (Word Count × 1.33) - The result is rounded up to the nearest whole number
3. Cost Calculation:
- The cost is calculated using the formula:
Cost = Tokens × (Price per Token) - The price per token is derived from the model’s price per 1,000 tokens.
4. Display Results:
The calculated tokens and cost are displayed in the results container.
The OpenAI API Pricing Structure
The OpenAI’s API price calculator uses specific pricing data provided for each model. The prices are originally specified per 1,000 tokens and are converted to a per-token basis. Below is a table summarizing the pricing:
| Model | Price per 1K Tokens | Price per Token |
|---|---|---|
| GPT-4.5 (newest model) | $0.075 | 0.000075 |
| chatgpt-4o-latest | $0.005 | 0.000005 |
| gpt-4o | $0.0025 | 0.0000025 |
| gpt-4o-mini | $0.00015 | 0.00000015 |
| o1 | $0.015 | 0.000015 |
| o3-mini | $0.0011 | 0.0000011 |
Note:
- Prices are calculated on a per-token basis for precision.
- The token conversion factor (1 word = 1.33 tokens) and rounding (ceil) ensure that even partial tokens are accounted for in cost estimation.
