OpenAI
gpt-oss-20b (high)
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
Introducing gpt-ossModel Snapshot
ReleaseAug 5, 2025
Context131,072
Overall
Rank #281 across 566
14.9
Coding
Rank #167 across 222
20.7
Blended Price
Rank #13 across 371
$0.088/M
Strength Profile
Percentile score by analysis domain.
* Cost is inverted: lower input, output, and blended prices rank higher.
Benchmark Percentiles
Higher bars mean stronger relative placement.
Model Details
Runtime
Output Speed224.5 tok/s
First Token0.41s
Max Output131,072
Pricing
Blended$0.088/M
Input$0.050/M
All Benchmarks
| Metric | Domain | Value | Rank |
|---|---|---|---|
| Artificial Analysis Intelligence Index | overall | 14.9 | #281 |
| Artificial Analysis Coding Index | coding | 20.7 | #167 |
| Artificial Analysis Math Index | math | 89.3 | #30 |
| MMLU-Pro | reasoning | 74.8% | #187 |