gpt-oss-120b vs Voxtral Small: price, context and capabilities

Choose gpt-oss-120b 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-120b reads more per request: 131k tokens against 32k.
  • gpt-oss-120b is the newer model (August 2025, against July 2025).
  • Only gpt-oss-120b offers reasoning, tool calling.
  • Only Voxtral Small offers audio input.

Open in the full comparison table

Which should you choose?

Each answer below comes straight from the published prices, specifications and independent benchmark results.

Very long inputs

Choose gpt-oss-120b

gpt-oss-120b reads up to 131k tokens per request, against 32k for Voxtral Small.

Latest release

Choose gpt-oss-120b

gpt-oss-120b is the newer release (August 2025, against July 2025 for Voxtral Small).

Specifications side by side

gpt-oss-120bVoxtral Small
ProviderOpenAIMistral AI
CategoryLanguage modelsLanguage models
StatusGenerally availableLegacy
Headline priceNo dataNo data
InputNo dataNo data
OutputNo dataNo data
Cached inputNo dataNo data
Context window131k32k
Max output131kNo data
ReleasedAugust 2025July 2025
Knowledge cutoffJune 2024No data
LicenceOpen weightsOpen weights
CapabilitiesReasoning, Tool calling, Self-hostableAudio input, Self-hostable
API model idgpt-oss-120bvoxtral-small-2507

Benchmarks side by side

Leader in bold.

Benchmarkgpt-oss-120bVoxtral Small
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 Voxtral Small?

Choose gpt-oss-120b 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-120b 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-120b or Voxtral Small?

gpt-oss-120b reads more per request: 131k tokens against 32k.

What is the difference between gpt-oss-120b and Voxtral Small?

gpt-oss-120b 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-120b reads more per request: 131k tokens against 32k. gpt-oss-120b is the newer model (August 2025, against July 2025). Only gpt-oss-120b offers reasoning, tool calling. Only Voxtral Small offers audio input.

Which is newer, gpt-oss-120b or Voxtral Small?

gpt-oss-120b was released on August 2025 and Voxtral Small on July 2025.