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GPT-5 vs GPT-5 Nano

Head to head on 28 shared benchmarks, with price, context window, and release dates.

Benchmark scores

83

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Model
GPT-5

OpenAI

48.3%0.1557.7%1623elo72.891.7%32.4%68.6%100.0%6.6%45.0%54.3%0.521.6249.6%83.7%82.0%65.5%0.0%18.0%43.7%37.8%74.4%73.4%12.9%90.0%90.0%0.0%46.7%91.1%-88.0%94.6%0.0%-0.0%68.1%4.58-61.1%80.0%80.0%-0.0%88.9%83.3%48.9%83.4%58.2%-------37.5%100.0%--86.1%0.0%92.7%92.7%-93.3%10.0%0.0%-60.0%-0.26-74.9%2.34-87.5%0.86--20.1%54.8%-56.7%
GPT-5 Nano

OpenAI

27.3%0.2510.0%703elo2878.2%8.3%42.8%100.0%4.0%32.5%47.0%1.381.3830.4%72.9%55.6%53.6%0.0%12.0%30.4%29.1%34.8%67.4%6.8%82.0%82.0%25.7%--0.0%---0.21---6.7%---1.18------52.8%62.4%43.4%55.7%46.8%68.4%40.3%--100.0%100.0%----26.7%---100.0%-0.0%-1.72--29.7%--20.41-6.67--40.0%43.7%
2 / 2 models
AttributeGPT-5

OpenAI

GPT-5 Nano

OpenAI

DescriptionOpenAI's August 2025 unified frontier model that auto-routes between a fast model and a deeper "thinking" variant.GPT-5 nano is an AI model from OpenAI.
FamilyGPT 5GPT
ParamsUndisclosed (closed)-
Open weightsclosedclosed
LicenseProprietaryproprietary
Released7 Aug 20257 Aug 2025
Context400,000400,000
Input $/1M-$0.05
Output $/1M-$0.40
Cache read $/1M$0.125$0.005
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestext, image, filetext, image, file
Providersopenai-
PublisherOpenAIOpenAI
Reported scores

FAQ

Is GPT-5 or GPT-5 Nano better?
Across the 28 benchmarks both models report on Sophon, GPT-5 leads on 23 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-5 and GPT-5 Nano compare on GPQA Diamond?
GPT-5 scores 68.6% and GPT-5 Nano scores 42.8% on GPQA Diamond.
When were GPT-5 and GPT-5 Nano released?
GPT-5 was released 7 Aug 2025 by OpenAI. GPT-5 Nano was released 7 Aug 2025 by OpenAI.

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