RSS

OpenAI

gpt-oss-120b

Benchmarks, price, context and versions

Also searched as

GPT OSS, gpt-oss 120b, gpt-oss-120b release date, gpt-oss-120b context window, gpt-oss-120b benchmarks

Direct answer: gpt-oss-120b is a model from OpenAI. 75.8% on GPQA Diamond, per Epoch AI. On OpenRouter, US$ 0.15 per 1 million input tokens and US$ 0.60 per 1 million output tokens.

✓ Good for

  • high-volume use (input price in the cheapest 25% on OpenRouter)
  • running on your own infrastructure (open weights)

✕ Not the best for

  • technical reasoning on science topics (#101 of 198 on GPQA Diamond)
  • technical reasoning as the model appears through the API (#93 of 135 on GPQA Diamond (OpenRouter))
  • agents that follow rules and use tools (#93 of 131 on τ-bench Verified (airline))

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is
75.8%

highest score on this metric 96.4%

101º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
88.9%

highest score on this metric 100%

64º / 186 · Epoch AI, latest version we checked

GPQA Diamond (OpenRouter)

?
77.4%

highest score on this metric 96.5%

93º / 135 · OpenRouter Benchmarks, latest version we checked

τ-bench Verified (airline)

?
67.3%

highest score on this metric 82%

93º / 131 · OpenRouter Benchmarks, latest version we checked

Key specs

Origin
the US
Family
gpt-oss provisional data
Weights?
open
License
no data
Input US$/1M?
US$ 0.15
Output US$/1M
US$ 0.60
Context?
131,072 tokens
Parameters
no data
Input
text
OpenRouter usage?
0.24%
Downloads (30 days)?
no data
Use cases provisional data
Text Agents
Dates in sources
  • 2025, published, per Epoch AI
  • 2025, listed on OpenRouter

Version history

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

How much does gpt-oss-120b cost?

On OpenRouter, US$ 0.15 per 1 million input tokens and US$ 0.60 per 1 million output tokens.

What is the context window of gpt-oss-120b?

131,072 tokens, per OpenRouter.

What is gpt-oss-120b's GPQA Diamond score?

75.8% on GPQA Diamond, per Epoch AI.

What is gpt-oss-120b?

gpt-oss-120b is a model from OpenAI, with open weights, used for text, agents.

Is gpt-oss-120b open source?

Yes, it has open weights. License: no data.

Is gpt-oss-120b good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made gpt-oss-120b?

It was made by OpenAI, a lab from the US.

provisional data Questions ordered by what shows up in public Google search suggestions (no volume). Answers use source data only.

Compare with

Models from OpenAI

See lab

Sources

  • Epoch AI, CC BY 4.0, latest version we checked.
  • OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.
  • OpenRouter Benchmarks, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.