GPT-OSS-20B
by OpenAI
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About
GPT-OSS-20B is an open-weight large language model with 20 billion parameters from OpenAI's open-source model initiative. It targets deployments requiring a smaller, efficient model that can run on consumer or mid-tier hardware while maintaining strong reasoning and coding capabilities relative to its size.
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Pricing Range
Input (per 1M)$0.00 -$0.00
Output (per 1M)$0.00 -$0.00
Providers1
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Timeline
ReleasedAug 5, 2025
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License & Family
License
Proprietary
Performance Overview
Performance metrics and category breakdown
Overall Performance
2 benchmarks
Average Score
40.7%
Best Score
80.1%
High Performers (80%+)
1Performance Metrics
Max Context Window
132.1KTop Categories
Science
80.1%
Agents
1.3%
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All Benchmark Results for GPT-OSS-20B
Complete list of benchmark scores with detailed information
| GPQA Diamond | Science | 80.10 | 80.1% | Unverified | |
| BrowseComp | Agents | 1.30 | 1.3% | Unverified |