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GPT-4o vs GPT-5 Nano

Head to head on 18 shared benchmarks, with price, context window, and release dates.

Benchmark scores

64

evals · sort by any column, ⤢ to expand fullscreen

Model
GPT-5 Nano

OpenAI

27.3%10.0%8.3%42.8%4.0%32.5%52.8%62.4%55.7%46.8%47.0%55.6%53.6%29.1%34.8%67.4%6.8%25.7%0.0%----0.250.21-6.7%-703elo2878.2%1.18-100.0%-43.4%68.4%40.3%1.381.38100.0%100.0%-26.7%30.4%-72.9%100.0%0.0%-0.0%12.0%30.4%-1.72-29.7%-20.41-6.6782.0%82.0%40.0%-43.7%
GPT-4o

OpenAI

6.0%6.1%0.3%54.3%2.4%34.3%55.1%46.1%70.1%49.0%30.9%74.8%57.4%33.3%21.6%74.5%8.3%25.1%-18.2%15.0%380.0%--0.33-45.9%----96.1-0.0%-------75.9%--10.8%---54.0%---5.71-61.2-0.98-----32.5%33.4%
2 / 2 models
AttributeGPT-4o

OpenAI

GPT-5 Nano

OpenAI

DescriptionGPT-4o is an AI model from OpenAI.GPT-5 nano is an AI model from OpenAI.
FamilyGPTGPT
Params--
Open weightsclosedclosed
Licenseproprietaryproprietary
Released20 Nov 20247 Aug 2025
Context128,000400,000
Input $/1M$2.50$0.05
Output $/1M$10.00$0.40
Cache read $/1M$1.250$0.005
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestext, image, filetext, image, file
Providers--
PublisherOpenAIOpenAI
Reported scores
Taubench61.2 pass^1
GSM8K96.1 Accuracy
ScholarSearch5.71 Social Sciences & Humanities (%)
AIME202438 pass@1

FAQ

Is GPT-4o or GPT-5 Nano better?
Across the 18 benchmarks both models report on Sophon, GPT-4o leads on 10 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-4o and GPT-5 Nano compare on GPQA Diamond?
GPT-4o scores 54.3% and GPT-5 Nano scores 42.8% on GPQA Diamond.
Which is cheaper, GPT-4o or GPT-5 Nano?
GPT-5 Nano is cheaper at $0.40 per million output tokens against $10.00 for GPT-4o - about 25.0x.
When were GPT-4o and GPT-5 Nano released?
GPT-4o was released 20 Nov 2024 by OpenAI. GPT-5 Nano was released 7 Aug 2025 by OpenAI.

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