How much does GPT-5 nano cost?
GPT-5 nano (OpenAI) costs $0.05 per 1M input tokens and $0.4 per 1M output tokens, $0.005 cached input. Calculate your cost per request, day and month.
| Provider | OpenAI |
| Input | $0.05 / 1M tokens |
| Output | $0.4 / 1M tokens |
| Cached input | $0.005 / 1M tokens |
| Context window | — |
| Notes | — |
| Source | https://platform.openai.com/docs/pricing |
| Last verified | 2026-10-14 |
Example: a chatbot
1,500 input + 400 output tokens per request, 2,000 requests/day, no caching: $0.000235 per request, $0.47 per day, $14.10 per month (30 days).
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