OpenAI: gpt-oss-20b (free)
🇺🇸 OpenAI · gpt-oss-20b (free)
Overview
OpenAI: gpt-oss-20b (free) is a large language model API from OpenAI, part of its gpt-oss-20b (free) model family. It is currently routed free of charge on OpenRouter, which makes it well suited to prototyping and high-volume experimentation where per-token cost would otherwise dominate. The 131K-token context window — around 197 pages of text — comfortably handles long documents, multi-file code, or extended conversations. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.
| Dimension | Unit | Price (USD) |
|---|---|---|
| Input | per 1M tokens | Free |
| Output | per 1M tokens | Free |
- Provider
- OpenAI
- Model Family
- gpt-oss-20b (free)
- Version String
- openai/gpt-oss-20b:free
- Status
- Active
- Modality
- Text
- Context Window
- 131,072 tokens
- Output Limit
- 32,768 tokens
90-Day Price Trend
Input / Output price (USD per 1M tokens)
Past 90 days of records; every price change is shown here
| Date | Dimension | Price (USD) | Source |
|---|---|---|---|
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter | |
| Output | Free | OpenRouter | |
| Input | Free | OpenRouter |
Key Insights
Key data points from this page for quick reference and citation.
- OpenAI: gpt-oss-20b (free) Input price: $0/M tokens
- OpenAI: gpt-oss-20b (free) Output price: $0/M tokens
- Context window: 131,072 tokens
- Provider: OpenAI
- Model family: gpt-oss-20b (free)
- Modalities: Text
- Data source: OpenRouter, updated daily