# Inference Cost Calculator

> Cost live model traffic from your request volume, token counts and prices.

Page: https://freecalculator.tech/tools/inference-cost-calculator
Last reviewed: 2026-09-17

## Formula

C = n x (tin / 1,000,000) x Rin + n x (tout / 1,000,000) x Rout + Platform

- C = n x (tin / 1,000,000) x Rin + n x (tout / 1,000,000) x Rout + Platform.
- Inputs used: Currency, Requests in the period, Input tokens per request, Output tokens per request, Price per million input tokens, Price per million output tokens (optional), Platform or gateway cost (optional), Price as of (optional), and other shown inputs.
- Edge handling: Requests in the period is required.; Requests in the period cannot be negative.; Requests in the period must be no more than 1000000000000.; Input tokens per request is required.; Input tokens per request cannot be negative..

## Inputs

- Currency
- Requests in the period
- Input tokens per request
- Output tokens per request
- Price per million input tokens
- Price per million output tokens (optional)
- Platform or gateway cost (optional)
- Price as of (optional)
- Price source (optional)

## Worked example: 250,000 calls of 1,200 in and 350 out

Token counts measured from your own logs, prices from your own bill.
1. Start with Currency: USD, Requests in the period: 250000, Input tokens per request: 1200, Output tokens per request: 350, Price per million input tokens: 2.50, Price per million output tokens (optional): 10.
2. Apply the method: C = n x (tin / 1,000,000) x Rin + n x (tout / 1,000,000) x Rout + Platform.
3. Token counts measured from your own logs, prices from your own bill.

## Common questions

### Where does this formula come from?

FinOps Framework capability: unit economics — cost per business unit is total cost for a period divided by the units delivered in the same period; a workload's cost is the sum of its metered components charged at the rates the organisation actually pays. See the source link on this page.

### What kind of calculation is this?

Request volume multiplied by the tokens each call uses and the per-million-token prices, with any platform charge added. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.

### What are its limits?

Arithmetic over the figures entered — it cannot tell whether the metering, logs or invoices behind them are complete. The result is only as current as the rates entered; a rate taken months ago is not a current price. Tiered, committed-use, cached-input and minimum-spend pricing are not modelled unless the user has already reduced them to the rates entered. An average token count hides the spread; a long tail of large requests can move the real bill. Retries and failed calls are only included if the user counted them as requests.

### How do I use the Inference Cost Calculator?

Enter the required values for Currency, Requests in the period, Input tokens per request, Output tokens per request, Price per million input tokens, and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.

### What formula does the Inference Cost Calculator use?

C = n x (tin / 1,000,000) x Rin + n x (tout / 1,000,000) x Rout + Platform The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.

### Can the Inference Cost Calculator be used for exact decisions?

Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.

## Limitations and assumptions

- Inputs outside the supported range are rejected rather than forced into a result.
- The result depends on the values you enter for this inference cost calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Sources

- The Linux Foundation — https://www.finops.org/framework/capabilities/unit-economics/

## Cite this page

- APA: Free Calculator. (2026, September 17). Inference Cost Calculator. https://freecalculator.tech/tools/inference-cost-calculator
- MLA: "Inference Cost Calculator." Free Calculator, 17 Sept. 2026, https://freecalculator.tech/tools/inference-cost-calculator.
- Link: Inference Cost Calculator — Free Calculator, https://freecalculator.tech/tools/inference-cost-calculator