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GPT-4.1 Mini vs GPT-5.5

Head to head on 13 shared benchmarks, with price, context window, and release dates.

Benchmark scores

178

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Model
GPT-5.5

OpenAI

68.4%90.0%1844elo51.7%76.8%13.7%46.1%88.6%68.8%47.3%75.0%49.2%69.3%---------86.2%54.2%------12.9%-----36.2%-------------86.0%100.0%------1315elo78.234.0%--51.8%---5.7%44.8%--24.9%1769elo-15.1%-------51.8%--------2.1%---84.7%82.5%81.1%73.0%87.7%96.3%87.7%--------92.8%---49.1%-86.9%-------------78.7%--45.3%100.0%50.0%-----51.5%--------4.2-----58.6%--75.7%83.4%-------57.4%68.1%--69.8%-----61.9%
GPT-4.1 Mini

OpenAI

57.9%17.4%1144elo4.5%66.4%5.0%38.3%78.1%65.5%40.4%71.9%7.6%52.9%-0.1760.0%100.0%0.0%332.4%43.0%46.3%98.2%--0.0%28.2%-11.0762.3%89.9%-10083.620.790.0%-0.04-0.0%0.0%1.111.111.01204.540.0%41.7%1.4534.5%13.0%53.6%3.6%--3.3%9.0%80.0%80.0%83.4%48.6%---43.3%100.0%-58.2%52.9%0.0%--1.5%18.7%--50.0%-65.0%56.8%0.0%100.0%3.473.471.55-100.0%63.3%0.0%0.0%67.5%40.2%83.5%6.7%-62.4%43.8%26.7%-------48.3%45.4%80.0%0.35100.0%93.3%100.0%92.5%-2.610.0%100.0%-77.9%-50.0%64.0%64.0%20.0%26.7%54.5%20.0%20.0%30.0%19.5%96.5%52.0%-30.0%30.0%---60.0%0.0%46.8%93.0%40.6%-100.0%88.2%100.0%20.0%33.3%100.0%73.3%100.0%-1.1456.72010.0%23.9%-100.0%100.0%--0.0%100.0%37.6%1.04100.0%100.0%45.6%--93.3%100.0%-29.0%90.0%29.0%82.0%82.0%50.8%
2 / 2 models
AttributeGPT-4.1 Mini

OpenAI

GPT-5.5

OpenAI

DescriptionGPT-4.1 Mini is an AI model from OpenAI.GPT-5.5 is an AI model from OpenAI.
FamilyGPTGPT
Params--
Open weightsclosedclosed
Licenseproprietaryproprietary
Released14 Apr 202523 Apr 2026
Context1,047,5761,050,000
Input $/1M$0.40$5.00
Output $/1M$1.60$30.00
Cache read $/1M$0.100$0.500
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiesimage, text, filefile, image, text
Providers--
PublisherOpenAIOpenAI
Reported scores

FAQ

Is GPT-4.1 Mini or GPT-5.5 better?
Across the 13 benchmarks both models report on Sophon, GPT-5.5 leads on 13 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-4.1 Mini and GPT-5.5 compare on GPQA Diamond?
GPT-4.1 Mini scores 66.4% and GPT-5.5 scores 76.8% on GPQA Diamond.
Which is cheaper, GPT-4.1 Mini or GPT-5.5?
GPT-4.1 Mini is cheaper at $1.60 per million output tokens against $30.00 for GPT-5.5 - about 18.8x.
When were GPT-4.1 Mini and GPT-5.5 released?
GPT-4.1 Mini was released 14 Apr 2025 by OpenAI. GPT-5.5 was released 23 Apr 2026 by OpenAI.

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