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GPT-5 Nano vs GPT-5.2

Head to head on 26 shared benchmarks, with price, context window, and release dates.

Benchmark scores

66

evals · sort by any column, ⤢ to expand fullscreen

Model
GPT-5.2

OpenAI

51.0%1699elo71.640.7%71.2%8.0%47.4%78.7%76.1%78.2%61.8%79.8%93.2%83.2%66.9%49.7%84.4%81.4%67.1%15.0%49.3%40.4%71.8%75.8%31.8%46.5%-100-100.0%-0.0%16.7%-65.9%60.0%40.6%9.4%----12.9385.0%79.0%24.0%----72.0%---96.7-18.7%-66.7%---53.5%---56.3%
GPT-5 Nano

OpenAI

27.3%703elo288.3%42.8%4.0%32.5%52.8%62.4%43.4%55.7%46.8%68.4%40.3%47.0%30.4%72.9%55.6%53.6%12.0%30.4%29.1%34.8%67.4%6.8%25.7%0.0%-0.25-0.21--6.7%----10.0%78.2%1.18100.0%----1.381.38100.0%100.0%-26.7%100.0%0.0%-0.0%-1.72-29.7%20.41-6.67-82.0%82.0%40.0%43.7%
2 / 2 models
AttributeGPT-5 Nano

OpenAI

GPT-5.2

OpenAI

DescriptionGPT-5 nano is an AI model from OpenAI.GPT-5.2 is an AI model from OpenAI.
FamilyGPTGPT
Params--
Open weightsclosedclosed
Licenseproprietaryproprietary
Released7 Aug 202511 Dec 2025
Context400,000400,000
Input $/1M$0.05$1.75
Output $/1M$0.40$14.00
Cache read $/1M$0.005$0.175
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestext, image, filefile, image, text
Providers--
PublisherOpenAIOpenAI
Reported scores

FAQ

Is GPT-5 Nano or GPT-5.2 better?
Across the 26 benchmarks both models report on Sophon, GPT-5.2 leads on 26 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-5 Nano and GPT-5.2 compare on GPQA Diamond?
GPT-5 Nano scores 42.8% and GPT-5.2 scores 71.2% on GPQA Diamond.
Which is cheaper, GPT-5 Nano or GPT-5.2?
GPT-5 Nano is cheaper at $0.40 per million output tokens against $14.00 for GPT-5.2 - about 35.0x.
When were GPT-5 Nano and GPT-5.2 released?
GPT-5 Nano was released 7 Aug 2025 by OpenAI. GPT-5.2 was released 11 Dec 2025 by OpenAI.

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