Very long inputs
Choose gpt-oss-20b
gpt-oss-20b reads up to 131k tokens per request, against 32k for Voxtral Small.
gpt-oss-20b vs Voxtral Small: price, context and capabilities
Choose gpt-oss-20b for very long inputs and the latest release; on the other points the two are level or the data is missing.
In short
- A price comparison is not possible: one of them has no comparable published price.
- gpt-oss-20b reads more per request: 131k tokens against 32k.
- gpt-oss-20b is the newer model (August 2025, against July 2025).
- Only gpt-oss-20b offers reasoning, tool calling.
- Only Voxtral Small offers audio input.
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 July 2025 for Voxtral Small).
Specifications side by side
| gpt-oss-20b | Voxtral Small | |
|---|---|---|
| Provider | OpenAI | Mistral AI |
| Category | Language models | Language models |
| Status | Generally available | Legacy |
| 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 | 32k |
| Max output | 131k | No data |
| Released | August 2025 | July 2025 |
| Knowledge cutoff | June 2024 | No data |
| Licence | Open weights | Open weights |
| Capabilities | Reasoning, Tool calling, Self-hostable | Audio input, Self-hostable |
| API model id | gpt-oss-20b | voxtral-small-2507 |
Benchmarks side by side
Leader in bold.
| Benchmark | gpt-oss-20b | Voxtral Small |
|---|---|---|
| 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 Voxtral Small?
Choose gpt-oss-20b for very long inputs and the latest release; on the other points the two are level or the data is missing.
Which is cheaper, gpt-oss-20b or Voxtral Small?
A price comparison is not possible: one of them has no comparable published price.
Which has the larger context window, gpt-oss-20b or Voxtral Small?
gpt-oss-20b reads more per request: 131k tokens against 32k.
What is the difference between gpt-oss-20b and Voxtral Small?
gpt-oss-20b is made by OpenAI and Voxtral Small by Mistral AI. A price comparison is not possible: one of them has no comparable published price. gpt-oss-20b reads more per request: 131k tokens against 32k. gpt-oss-20b is the newer model (August 2025, against July 2025). Only gpt-oss-20b offers reasoning, tool calling. Only Voxtral Small offers audio input.
Which is newer, gpt-oss-20b or Voxtral Small?
gpt-oss-20b was released on August 2025 and Voxtral Small on July 2025.