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LLM Cost & Capacity Calc – Per-Request & Total Cost
x402
LLM Cost & Capacity Calc – Per-Request & Total Cost is a paid API for AI agents from llm-cost-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates the cost of LLM API calls given input and output token counts and per-million-token prices, returning per-request and total cost breakdowns.
Price / call$0.02
Success—
StatusUnknown
How this service works
Cost of LLM API calls from input and output tokens and your per-million-token prices, per request and in total.
Output
Returns a structured breakdown including cost per request, total cost for all requests, input cost per request, output cost per request, total input and output tokens, blended price per million tokens, and the output share of total cost as a percentage, along with optional summary and disclaimer fields.
Example use cases
GPT-4o budget check before launch
“How much will it cost me to run 10,000 requests using GPT-4o if each request sends 1,200 input tokens and gets back 600 output tokens? Input is $2.50 per million tokens and output is $10 per million tokens.”
Comparing input vs output cost split
“Break down cost per request and total cost for a single LLM call with 2,000 input tokens and 500 output tokens, at $5 per million input tokens and $20 per million output tokens — I want to see how much of my spend is on output.”
Daily batch job cost estimation
“I run 50,000 LLM API calls per day with about 300 input tokens and 150 output tokens each. My provider charges $1.50 per million input tokens and $6 per million output tokens — what's my total daily cost and blended price per million tokens?”
Technical details
Endpoint
GEThttps://llm-cost-calc.x402tookit.com/llm-cost?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a quick, deterministic calculation of LLM API cost from known token counts and per-million-token prices — ideal for budget checks, cost breakdowns by input vs output, and per-request vs total spend analysis. Prefer this over the forecast or caching endpoints when you have exact token counts for a defined workload and just need raw cost figures without growth projections or caching logic.
Side effects
- Missing required query parameters (inputTokens, outputTokens, inputPricePerMTok, outputPricePerMTok) returns an error
- Non-numeric token counts or prices cause validation failure
- requests value outside 1–1,000,000,000 range rejected
- Payment of $0.02 USDC not fulfilled causes 402 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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