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Build vs API

The decision everyone gets wrong: owned hardware only wins at high sustained utilization, because the API's zero idle cost is worth more than its per-token premium at low volume. Put in your token economics and your fleet quote — the break-even volume tells you which side of the line you are on.

The API path

The owned path

Use your provider's current price sheet and a real capex quote — prices move on both sides; this calculator never assumes them for you.

Monthly API spend

$4,050.00

Monthly owned cost

$4,700.80

API spend is 0.86× the owned cost at this volume.

Cheaper at your volume

The API

Zero idle cost beats the per-token premium at this volume. $651 a month between the two paths.

Break-even volume

11,607 requests/day

Below this daily volume the API is the cheaper path; above it, the owned fleet starts paying for itself.

The owned fleet costs the same whether it serves one request or a million — depreciation and power run whether the machines work or wait. The API bills only for tokens you use, so its zero idle cost is worth more than its per-token premium until volume is high and sustained. Most build-vs-buy arguments get this backwards.

How to read it: the owned cost is flat — you pay it at zero requests and at a million — while API spend scales with volume, so everything hangs on whether your real, sustained volume sits above the break-even. Be honest about the inputs: spiky traffic, growth you have not earned yet, and the engineers a fleet needs all push the true break-even higher than this arithmetic. Prices move on both sides — rerun it with your provider's current sheet and a live capex quote, not last quarter's.

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