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LLM Cost & Capacity Calc – Monthly Budget Projection
x402
LLM Cost & Capacity Calc – Monthly Budget Projection 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 2026-10-30).
Forecasts monthly and yearly LLM API spend from daily request volume, token counts, and per-million-token prices, with optional growth rate and per-user cost breakdown.
Price / call$0.02
Success—
StatusUnknown
How this service works
Forecast monthly and yearly LLM spend from daily requests, tokens and prices, with monthly growth and per-user cost.
Output
Returns a month-by-month projection array (cost, request volume, month number), plus summary figures: month 1 cost, final month cost, total projected cost, average monthly cost, cost per request, and optionally cost per user per month. Also includes metadata like the as-of timestamp and any disclaimer or warning flags.
Example use cases
SaaS AI feature budget planning
“I'm building a SaaS product with about 1000 active users making 5000 LLM requests per day. Each request uses roughly 800 input tokens and 400 output tokens. I'm on a model priced at $3 per million input tokens and $12 per million output tokens. Can you project my monthly LLM costs over 12 months with 5% monthly user growth so I can plan my pricing?”
Startup investor cost deck
“We need to show our investors what our AI API costs will look like over the next 24 months. We're starting at 2000 requests per day, 600 input tokens and 200 output tokens each, priced at $1.50 per million input and $6 per million output tokens, with 15% monthly growth. What does the cost curve look like?”
Per-user cost sensitivity analysis
“I want to know how much my LLM API is costing me per user per month. We have 250 active users, 8000 requests per day, 1000 input tokens and 500 output tokens per request, and we're paying $5 per million input tokens and $15 per million output tokens. No growth assumption needed — just show me month 1 figures.”
Technical details
Endpoint
GEThttps://llm-cost-calc.x402tookit.com/monthly-budget?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a multi-month forward-looking cost forecast for LLM API usage, especially when growth rate and per-user economics matter. It is more appropriate than a simple per-call cost calculator when you need to model trajectory, total budget envelopes, or unit economics over time. Choose this over point-in-time cost endpoints when planning budgets, pricing a SaaS product, or preparing financial projections.
Side effects
- Missing required parameters (requestsPerDay, inputTokens, outputTokens, inputPricePerMTok, outputPricePerMTok) returns a validation error
- months value outside 1–60 range may be rejected or clamped
- Negative token counts or prices may produce nonsensical results
- Payment failure (x402) if USDC balance is insufficient
- Very high growth rates may produce overflow or implausibly large projections without error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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