OpenAI
gpt-5-nano
openai/gpt-5-nano
Price per million tokens
- Input
- $0.063
- Output
- $0.506
- Cache write
- not offered
- Cache read
- $0.006
What you pay. It is what the tokens cost us to buy plus 20%, and your usage page shows what we paid beside what you paid on every request you send.
Limits
- Context window
- 400,000 tokens
- Max output
- 128,000 tokens
- Images
- supported
What it costs to run
| Workload | Input | Output | Cost | Per 1,000 calls |
|---|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0003 | $0.32 |
| Long document summary | 50,000 | 2,000 | $0.0042 | $4.18 |
| Agent step with tools | 20,000 | 1,500 | $0.0020 | $2.03 |
| 1M in, 1M out | 1,000,000 | 1,000,000 | $0.5697 | $569.70 |
Calling it
const res = await client.chat.completions.create({ model: "openai/gpt-5-nano", messages: [{ role: "user", content: "Hello" }], });