Self-hosting and data control
Choose gpt-oss-20b
gpt-oss-20b has open weights, so you can run it on your own servers; Mistral Small 3.2 is only available through its provider.
gpt-oss-20b vs Mistral Small 3.2: price, context and capabilities
Choose gpt-oss-20b for self-hosting and data control and the latest release; on the other points the two are level or the data is missing.
In short
- Mistral Small 3.2 has been retired; gpt-oss-20b is the one you can still call.
- A price comparison is not possible: one of them has no comparable published price.
- gpt-oss-20b is the newer model (August 2025, against June 2025).
- Only gpt-oss-20b offers reasoning, tool calling, self-hostable.
Which should you choose?
Each answer below comes straight from the published prices, specifications and independent benchmark results.
Latest release
Choose gpt-oss-20b
gpt-oss-20b is the newer release (August 2025, against June 2025 for Mistral Small 3.2).
Specifications side by side
| gpt-oss-20b | Mistral Small 3.2 | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Category | Language models | Language models |
| Status | Generally available | Retired |
| Headline price | No data | No data |
| Input | No data | No data |
| Output | No data | No data |
| Cached input | No data | No data |
| Context window | 131k | No data |
| Max output | 131k | No data |
| Released | August 2025 | June 2025 |
| Knowledge cutoff | June 2024 | No data |
| Licence | Open weights | Proprietary |
| Capabilities | Reasoning, Tool calling, Self-hostable | No data |
| API model id | gpt-oss-20b | mistral-small-2506 |
Benchmarks side by side
Leader in bold.
| Benchmark | gpt-oss-20b | Mistral Small 3.2 |
|---|---|---|
| Intelligence Index | 9 | No data |
| Terminal-Bench Hard | 10.6% | No data |
| SciCode | 38.9% | No data |
| GPQA Diamond | 68.8% | No data |
| Humanity's Last Exam | 11% | No data |
| IFBench (instruction following) | 65.1% | No data |
| τ²-Bench (agentic tool use) | 60.2% | No data |
| Long-context reasoning (AA-LCR) | 34.7% | No data |
Independent evaluations by Artificial Analysis, run the same way for every model, at the reasoning setting shown. Percentages unless marked as an index.
Frequently asked questions
Should I choose gpt-oss-20b or Mistral Small 3.2?
Choose gpt-oss-20b for self-hosting and data control and the latest release; on the other points the two are level or the data is missing.
Which is cheaper, gpt-oss-20b or Mistral Small 3.2?
A price comparison is not possible: one of them has no comparable published price.
What is the difference between gpt-oss-20b and Mistral Small 3.2?
gpt-oss-20b is made by OpenAI and Mistral Small 3.2 by Mistral AI. Mistral Small 3.2 has been retired; gpt-oss-20b is the one you can still call. A price comparison is not possible: one of them has no comparable published price. gpt-oss-20b is the newer model (August 2025, against June 2025). Only gpt-oss-20b offers reasoning, tool calling, self-hostable.
Which is newer, gpt-oss-20b or Mistral Small 3.2?
gpt-oss-20b was released on August 2025 and Mistral Small 3.2 on June 2025.