We use cookies to keep you signed in. Cookie policy
We use cookies
CalculatorAI uses cookies to keep you signed in and remember your preferences. Optional cookies help us understand how the site is used. Cookie policy
About $0.002052 per task on GPT-5.6 Luna: 3 model calls, each resending the conversation so far. At 10,000 tasks a month that is $20.52.
An AI step inside an n8n or Zapier workflow classifies, summarises or drafts something from the trigger data — we assume three calls with short inputs, run at high volume. On GPT-5.6 Luna, one task costs about $0.002052, and 10,000 tasks a month come to $20.52. The number that decides it is not the price per million tokens but how many calls one task takes — here 3 — because every call resends the whole conversation so far.
So the calls are not the same size. The first sends about 1,400 input tokens; the last, carrying everything before it, sends about 2,800 — 2× more. Workflow runs are short, so per run they cost fractions of a cent — but at ten thousand runs the model choice is the whole bill. The platform’s own run pricing is separate and not included. The calculator below opens with this shape loaded: change the steps, the tool output and the volume to your own agent, and treat every figure here as an estimate from those assumptions, not a quote.
What One Agent Task Really Costs
Cost per task
One task · 5 calls to GPT-5.6 Terra
Cost per model call
$0.008640
averaged across 5 calls
Context growth
3.3×
1,800 tokens on the first call, 6,000 on the last
What drives one task
$0.0432At this volume
100 tasks · DayIf you ran this many tasks
100
$4.32
1,000
$43.20
10,000
$432.00
100,000
$4,320.00
What this figure assumes
Drop in a paystub, bank statement or screenshot — the AI reads it and fills these fields for you.
Income & Expense Tracker is where this stops being a one-off number: keep your real balances there and the projection updates itself.
Describe an invoice and the AI writes it. PDF without watermarks, free.
Same task shape on every row (800 system tokens cached, 600-token task, 300 tokens written and 400 returned by a tool per step). The last column doubles the steps: the input bill roughly quadruples because each call carries all the earlier ones.
| Model | Per task | Per month (10,000 tasks) | Per task at 6 steps |
|---|---|---|---|
| GPT-5.6 Luna | $0.002052 | $20.52 | $0.005220 |
| Claude Opus 5 | $0.0468 | $468.00 | $0.1215 |
| GPT-5.6 Terra | $0.0205 | $205.20 | $0.0522 |
Use cases