What affects AI API cost?
AI API cost depends on usage volume, input tokens, output tokens, workflow depth, and the prices you enter for each token type.
AI API calculator
AI API Cost Calculator
Estimate how much an AI app, bot, workflow, or product could cost before you launch. Enter your expected users, requests, token usage, and example input/output pricing to calculate daily, monthly, and yearly API costs.
Calculator
Estimated AI API cost
This calculator runs locally in your browser.
Prices are examples/manual inputs. Always verify real pricing with your AI provider.
Usage presets Presets are examples. Adjust the numbers to match your own product.
Scale scenarios
| Scenario | Users/day | Monthly API cost | Yearly API cost |
|---|---|---|---|
| Current usage | 0 | $0.00 | $0.00 |
| 10x usage | 0 | $0.00 | $0.00 |
| 100x usage | 0 | $0.00 | $0.00 |
Related cost tools
AI API Cost Calculator
Users, requests, and AI calls
A single user request can trigger one model call or several calls in an agent or RAG workflow. This calculator separates user requests from AI calls.
Input tokens vs output tokens
Input tokens are what you send to the model. Output tokens are generated by the model and can dominate cost when answers are long.
Monthly and yearly cost planning
Daily usage compounds quickly. Compare daily, monthly, yearly, 10x, and 100x scenarios before launch or scale-up.
Why these prices are examples
PromptMeter does not claim official provider pricing. Enter your own current prices and verify them with your provider.
When to review provider pricing manually
Review pricing before launch, after model changes, when output length changes, or when usage grows faster than expected.
FAQ
AI API cost FAQ
How is AI API cost calculated?
PromptMeter multiplies users, requests, AI calls, input tokens, output tokens, and your manual token prices to estimate daily, monthly, and yearly cost.
Are these official model prices?
No. Prices are example/manual inputs. Always verify real pricing with your AI provider.
Why do output tokens matter?
Generated answers are often billed separately, and long answers can become a major part of API cost.
How can I reduce monthly AI API costs?
Reduce repeated context, control output length, use fewer AI calls per workflow, and monitor high-volume paths first.