Self-hosting and data control
Choose gpt-oss-120b
gpt-oss-120b has open weights, so you can run it on your own servers; Magistral Medium 1.2 is only available through its provider.
gpt-oss-120b vs Magistral Medium 1.2: price, context and capabilities
Choose gpt-oss-120b for self-hosting and data control. Choose Magistral Medium 1.2 for the latest release.
In short
- Magistral Medium 1.2 has been retired; gpt-oss-120b is the one you can still call.
- A price comparison is not possible: one of them has no comparable published price.
- Magistral Medium 1.2 is the newer model (September 2025, against August 2025).
- Only gpt-oss-120b 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 Magistral Medium 1.2
Magistral Medium 1.2 is the newer release (September 2025, against August 2025 for gpt-oss-120b).
Specifications side by side
| gpt-oss-120b | Magistral Medium 1.2 | |
|---|---|---|
| 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 | September 2025 |
| Knowledge cutoff | June 2024 | No data |
| Licence | Open weights | Proprietary |
| Capabilities | Reasoning, Tool calling, Self-hostable | No data |
| API model id | gpt-oss-120b | magistral-medium-2509 |
Benchmarks side by side
Leader in bold.
| Benchmark | gpt-oss-120b | Magistral Medium 1.2 |
|---|---|---|
| Intelligence Index | 11.6 | No data |
| Terminal-Bench Hard | 23.5% | No data |
| SciCode | 34% | No data |
| GPQA Diamond | 78.2% | No data |
| Humanity's Last Exam | 19.6% | No data |
| IFBench (instruction following) | 69% | No data |
| τ²-Bench (agentic tool use) | 65.8% | No data |
| Long-context reasoning (AA-LCR) | 52% | 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-120b or Magistral Medium 1.2?
Choose gpt-oss-120b for self-hosting and data control. Choose Magistral Medium 1.2 for the latest release.
Which is cheaper, gpt-oss-120b or Magistral Medium 1.2?
A price comparison is not possible: one of them has no comparable published price.
What is the difference between gpt-oss-120b and Magistral Medium 1.2?
gpt-oss-120b is made by OpenAI and Magistral Medium 1.2 by Mistral AI. Magistral Medium 1.2 has been retired; gpt-oss-120b is the one you can still call. A price comparison is not possible: one of them has no comparable published price. Magistral Medium 1.2 is the newer model (September 2025, against August 2025). Only gpt-oss-120b offers reasoning, tool calling, self-hostable.
Which is newer, gpt-oss-120b or Magistral Medium 1.2?
Magistral Medium 1.2 was released on September 2025 and gpt-oss-120b on August 2025.