Free · no signup · browser-local

Agent Token Cost Calculator with Manual Model Prices

Estimate a planned Agent workload from your own token prices, steps and repetitions. Compare an explicit budget using decimal arithmetic and inspect the assumptions.

Browse all tools →

Local workspace · no model calls · nothing saved

Make it yours

Illustrative defaults, not vendor rates. Enter both prices and your budget in the same currency. All steps use the same token assumptions.

Input price / million tokens0–1,000,000Output price / million tokens0–1,000,000Input tokens / step0–100,000,000Output tokens / step0–100,000,000Steps / run1–100,000Number of runs1–100,000Budget · same currency0–1,000,000,000,000

Caching, fixed charges and currency · optional

Cached input tokens / stepIncluded in total input tokens, never added on top. Must not exceed input tokens.Cached input price / million tokensFixed charge / runCharged once per run, regardless of the number of steps.Currency labelA label only. Prices, fixed charges and budget must use the same currency; no conversion.

Export format

Formula

Per step = ((input − cached) × input price + cached × cache price + output × output price) ÷ 1,000,000

Per run = per step × steps + fixed charge; total = per run × runs

Hidden reasoning, extra tool charges, retries, taxes and exchange rates are excluded unless included in your inputs. No prices are fetched.

Estimated total · your currency0.18

Per step0.006

Per run0.018

Calls30

Input / output tokens30,000 / 15,000

Within budget · Remaining 0.82

Cost breakdown

Uncached input: 0.06 (1000 - 0) × 2 / 1000000 × 30
Cached input: 0 0 × 0 / 1000000 × 30
Output: 0.12 500 × 8 / 1000000 × 30
Fixed run charges: 0 0 × 10

Your output

agent-cost-estimator.json

{
  "rates": "User supplied; defaults illustrative, not vendor rates",
  "inputs": {
    "inputPrice": 2,
    "outputPrice": 8,
    "inputTokens": 1000,
    "outputTokens": 500,
    "steps": 3,
    "repeats": 10,
    "budget": 1,
    "cacheTokens": 0,
    "cachePrice": 0,
    "fixedCost": 0,
    "currency": ""
  },
  "formulas": {
    "uncachedInput": "(1000 - 0) × 2 / 1000000 × 30",
    "cachedInput": "0 × 0 / 1000000 × 30",
    "output": "500 × 8 / 1000000 × 30",
    "fixed": "0 × 10",
    "total": "(uncached input + cached input + output) per step × steps × runs + fixed cost × runs"
  },
  "estimate": {
    "calls": 30,
    "inputTokens": 30000,
    "outputTokens": 15000,
    "perStep": 0.006,
    "perRun": 0.018,
    "total": 0.18,
    "budget": 1,
    "remaining": 0.82,
    "withinBudget": true,
    "affordableRuns": 55,
    "cachedTokens": 0,
    "uncachedTokens": 30000,
    "currency": "",
    "breakdown": {
      "uncachedInput": 0.06,
      "cachedInput": 0,
      "output": 0.12,
      "fixed": 0
    },
    "formulas": {
      "uncachedInput": "(1000 - 0) × 2 / 1000000 × 30",
      "cachedInput": "0 × 0 / 1000000 × 30",
      "output": "500 × 8 / 1000000 × 30",
      "fixed": "0 × 10",
      "total": "(uncached input + cached input + output) per step × steps × runs + fixed cost × runs"
    },
    "exact": {
      "perStep": "0.006",
      "perRun": "0.018",
      "total": "0.18",
      "remaining": "0.82",
      "breakdown": {
        "uncachedInput": "0.06",
        "cachedInput": "0",
        "output": "0.12",
        "fixed": "0"
      }
    }
  }
}

Getting started

Enter input/output prices per million tokens in one currency, then compare calculated cost with your budget.

Before you use the result

Default rates are illustrative, not vendor prices. Optional cached-input pricing and fixed per-run charges are supported. Reasoning overhead, retries, taxes and currency conversion are not inferred.

Try an example

At rates 2 and 8, 1,000 input and 500 output tokens cost 0.006 per step.

How it works

Per step = (input tokens × input rate + output tokens × output rate) ÷ 1,000,000. Total = per step × steps × runs.

Frequently asked questions

Estimate token charges from your own rates, tokens per step, step count and repeated runs.

How do I use Agent Cost Estimator?