Model pricing · OpenAI
GPT-5.4 nano pricing
GPT-5.4 nano costs $0.2 per million input tokens and $1.25 per million output tokens at list price. Best for: bulk / classification.
| Input | $0.2 / 1M tokens |
|---|---|
| Output | $1.25 / 1M tokens |
| Cached input (read) | $0.02 / 1M tokens |
| Context window | Not published |
Source: OpenAI pricing, cross-checked against models.dev on 2026-09-15. Your provider invoice is authoritative.
What it costs in practice
| Workload | List price | If input is cached |
|---|---|---|
| One request: 10,000 tokens in, 1,000 out | $0.0032 | $0.0014 |
| A month of that request, 100 times a day | $9.75 | $4.35 |
| A 3,000-token instruction file on 100 requests a day, for a month | $1.80 | $0.180 |
The last row is the always-on cost of an instruction file like CLAUDE.md: paid on every request, whether the task needs it or not. Check how much of yours is waste.
Price history
From tokencheat's dated pricing snapshots. Only changes are listed.
| Since | Input / 1M | Output / 1M |
|---|---|---|
| 2026-01-01 | $0.2 | $1.25 |
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Compare every model side by side or price your own workload.