Price Per Token
Gpt 5 Nano Pricing Calculator
Use the Gpt 5 Nano pricing calculator to estimate the price for generating a certain number of words, characters or tokens and compare the price to other models
How to Use the Gpt 5 Nano Pricing Calculator
Step-by-Step Guide
Choose Your Measurement
Select tokens for precision, words for content planning, or characters for short-form content.
Enter Your Numbers
Input your expected prompt length, desired response size, and number of API calls:
- Prompt length: How much text you'll send to the AI (your question or instructions)
- Response size: How much text you expect the AI to generate back
- API calls: How many times you'll make this request (for total project cost)
Compare Results & Analyze Breakdown
Review your pricing analysis:
- Model comparison: View the Gpt 5 Nano costs highlighted at the top, then compare with other models in the table below
- Cost breakdown: See separate input vs output costs and total per-call expenses
- Optimization: Use the data to optimize your usage and choose the most cost-effective model
💡 Gpt 5 Nano Cost Scenario:
Let's say you're creating a content generation tool and need Gpt 5 Nano to write 5 detailed blog posts. For each post, you provide a 150-word outline and expect a comprehensive 800-word article.
Measurement: Words
Total Input: 150 words × 5 posts = 750 words
Total Output: 800 words × 5 posts = 4,000 words
API calls: 5 (one per blog post)
Plug these numbers into the pricing calculator and you'll instantly know exactly what it costs to generate those 5 blog posts—so you can plan your content budget without surprises.
Understanding Input Types
Tokens
The most precise measurement. Tokens are the basic units AI models process - roughly 0.75 words or 4 characters each.
Words
Standard text measurement. Perfect for writers estimating content costs. Converted to ~1.3 tokens per word.
Characters
Ideal for social media or short-form content. Converted to ~0.25 tokens per character.
Calculator Components
Input
Text you send to the Gpt 5 Nano API (your prompt)
Output
Generated response from the model
API Calls
Number of requests you'll make to calculate total project cost
Pro Tips
Pricing data is updated daily from OpenRouter to ensure accuracy
Multiply the per-call cost by your expected usage volume for total project estimates
Use the comparison table to find the most cost-effective model for your specific use case
Consider both input and output costs - some models have different pricing ratios