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A side-by-side comparison of gpt-oss-20b and o3, using the lowest price and highest limits found across every provider that offers each model.
| gpt-oss-20b | o3 | |
|---|---|---|
| Providers | 49 | 32 |
| Cheapest input ($/M) | $0 via FastRouter | $0.27 via Api.Airforce |
| Cheapest output ($/M) | $0 via FastRouter | $1.05 via Api.Airforce |
| Max context | 131.1K | 200K |
| Max output | 131.1K | 100K |
| Released | Jul 18, 2025 | Apr 8, 2025 |
| Open weights | Yes | No |
| Features | ReasoningToolsStructured outputTemperature | ReasoningToolsStructured outputFiles |
| Input modalities | Text | FileImageText |
| Output modalities | Text | Text |