Inference $/M tokens
Compare rented and owned inference capacity in $/M tokens on the same throughput and productive-use assumptions, with the price-decline context you should underwrite against.
Inference cost per million tokens
Compare ownership and rental on the same throughput and productive-use denominator. Owned node cost is the calendar-hour allocation of capex, energy, and opex; rented node cost is the capacity held for that hour. Prices enterprises paid for tokens fell ~$10 → ~$2.50/M in a year (Ramp spend data, Mar 2025), so underwrite inference revenue with a price-decline curve → Ch 1.8.
Worked decision — stated assumptions
All ledger inputs are assumed teaching values chosen to exercise this chapter’s method; they are not market quotes, OEM performance claims or operating records. Arithmetic uses the full entered precision.
| Input | Value |
|---|---|
| Rented node cost | 20 $/hr |
| Owned node calendar cost | 10 $/hr |
| Throughput | 1000 tok/s |
| Owned-use utilization | 50 % |
Illustrative serving case: assume one tested node produces 1,000 useful output tokens/s within the declared latency target and runs productively 50% of each paid hour. Useful output is 1,000 × 3,600 × 0.50 = 1.8 million tokens/hour. Assumed rental of $20/hour costs $11.1 per million output tokens; an assumed owned calendar cost of $10/hour costs $5.56 per million.
Against an illustrative $6 per million output-token cost allowance, ownership passes and rented capacity fails. At 40% productive use the owned cost rises to $6.94 and also fails. Keep the model, precision, prompt/output mix, batching, latency target and cost boundary identical; prompt tokens and cached tokens do not silently enter this output denominator.
The owned case crosses the $6 allowance at 46.3% productive utilization: 10 / (1,000 × 3,600 × 6 / 1,000,000).
Guide derivation. Method and handoff: Chapter 1.8 — Business Models, Economics & ROI.
These are transparent screening estimates, not final designs, financial advice, or project approvals. Replace every default with current project data and have the responsible project authorities validate the result. You can save, share a permalink, or export to CSV; see the full calculator suite.