gpt-oss-20b
openai/gpt-oss-20b
OpenAI’s gpt-oss-20b is a text‑only model released on 2024‑06‑01. It supports a context window of 131,072 tokens, includes tool usage and reasoning capabilities, and is priced at $0.03 per million input tokens and $0.13 per million output tokens. The model’s weights are not publicly available.
- tool use
- structured outputs
- reasoning
At a glance
Specifications
What the API gives you
- Context window
- 131K tokens
- Max output
- 131K tokens
- Input price
- $0.030 / 1M tokens
- Output price
- $0.13 / 1M tokens
- Cache read
- $0.030 / 1M tokens
- Modalities
- text → text
- Knowledge cutoff
- Jun 30, 2024
- Released
- Jun 1, 2024
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. This means the available task-specific evidence did not support a ranking yet—not that the model was reviewed and rejected.
Benchmarks
No independent benchmark results are linked to this model yet. We keep it visible while withholding quality claims until usable results arrive.
Open-weight model on Hugging Face.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.