All modelsCalculate what your real prompts cost on gpt-oss-20b
gpt-oss-20b
OpenAI model, released 5 Aug 2025.
$0.029
per 1M input tokens
$0.14
per 1M output tokens
—
per 1M cached-read tokens
Price history
Price stable since we started tracking (7 Jul 2026). History will chart here as soon as it moves.
Specifications
- Lab
- OpenAI
- Released
- 5 Aug 2025
- Context window
- 131k tokens
- Max output
- —
- Input modalities
- text
- Output modalities
- text
- Knowledge cutoff
- 2024-06-30
- Open source
- No
Frequently asked questions
How much does gpt-oss-20b cost?
gpt-oss-20b costs $0.029 per 1M input tokens and $0.14 per 1M output tokens (list price, updated every 6 hours).
What is gpt-oss-20b's context window?
gpt-oss-20b supports a 131k-token context window.