OpenAI
gpt-oss-20b
openai/gpt-oss-20b
Price per million tokens
- Input
- $0.038
- Output
- $0.165
- Cache write
- not offered
- Cache read
- $0.038
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
- 131,072 tokens
- Max output
- 131,072 tokens
- Images
- text only
What it costs to run
| Workload | Input | Output | Cost | Per 1,000 calls |
|---|---|---|---|---|
| Short chat turn | 1,000 | 500 | $0.0001 | $0.12 |
| Long document summary | 50,000 | 2,000 | $0.0022 | $2.23 |
| Agent step with tools | 20,000 | 1,500 | $0.0010 | $1.01 |
| 1M in, 1M out | 1,000,000 | 1,000,000 | $0.2026 | $202.56 |
Calling it
const res = await client.chat.completions.create({ model: "openai/gpt-oss-20b", messages: [{ role: "user", content: "Hello" }], });