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GPT-4.1 vs gpt-oss-120b

Head to head on 16 shared benchmarks, with price, context window, and release dates.

Benchmark scores

53

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Model
gpt-oss-120b

OpenAI

41.8%66.7%58.2%959elo67.2%5.9%58.3%70.7%1.621.5377.5%36.0%26.0%71.6%5.3%45.0%----38.9%7.6%---13.0%-35.8--57.651.0%60.2%38.8%50.3%48.6%68.9%39.2%-----80.0%---97.9%--65.6%--49.6%
GPT-4.1

OpenAI

52.4%34.7%63.1%1417elo66.6%4.2%43.0%45.7%0.490.4980.6%38.1%39.6%75.1%13.6%47.1%0.0%43.7%26.7%61.5%--1.6483.7%1.55-12.4%-5.5%60.9%--------70.8%91.3%32.1%32.1%69.4%-50.5%65.9%8.57-31.1%10.0%-92.0%92.0%48.0%
2 / 2 models
AttributeGPT-4.1

OpenAI

gpt-oss-120b

OpenAI

DescriptionGPT-4.1 is an AI model from OpenAI.GPT-Oss 120b is an AI model from OpenAI, released with open weights.
FamilyGPTGPT
Params--
Open weightsclosedopen
Licenseproprietaryapache-2.0
Released14 Apr 20255 Aug 2025
Context1,047,576131,072
Input $/1M$2.00$0.15
Output $/1M$8.00$0.60
Cache read $/1M$0.500$0.030
Cache write $/1M--
Speed0 tok/s186 tok/s
Latency0.00 s0.50 s
Modalitiesimage, text, filetext
Providers--
PublisherOpenAIOpenAI
Reported scores
GPQA Diamond67.2% (AA)
LiveCodeBench70.7% (AA)
MMLU-Pro77.5% (AA)
SciCode36.0% (AA)

FAQ

Is GPT-4.1 or gpt-oss-120b better?
Across the 16 benchmarks both models report on Sophon, GPT-4.1 leads on 9 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-4.1 and gpt-oss-120b compare on GPQA Diamond?
GPT-4.1 scores 66.6% and gpt-oss-120b scores 67.2% on GPQA Diamond.
Which is cheaper, GPT-4.1 or gpt-oss-120b?
gpt-oss-120b is cheaper at $0.60 per million output tokens against $8.00 for GPT-4.1 - about 13.3x.
When were GPT-4.1 and gpt-oss-120b released?
GPT-4.1 was released 14 Apr 2025 by OpenAI. gpt-oss-120b was released 5 Aug 2025 by OpenAI.

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