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GPT-5.2 vs GPT-5.5

Head to head on 27 shared benchmarks, with price, context window, and release dates.

Benchmark scores

68

evals · sort by any column, ⤢ to expand fullscreen

Model
GPT-5.5

OpenAI

68.4%86.0%1844elo78.251.7%76.8%13.7%46.1%84.7%82.5%81.1%73.0%87.7%96.3%87.7%92.8%49.1%86.9%88.6%68.8%50.0%51.5%47.3%75.0%49.2%69.8%69.3%--86.2%54.2%12.9%-36.2%--90.0%100.0%--1315elo34.0%51.8%5.7%44.8%24.9%1769elo15.1%-51.8%--2.1%---78.7%45.3%100.0%-4.2--58.6%75.7%83.4%57.4%68.1%61.9%
GPT-5.2

OpenAI

65.9%60.0%1699elo71.640.7%71.2%8.0%47.4%78.7%76.1%78.2%61.8%79.8%93.2%83.2%72.0%49.7%84.4%81.4%67.1%15.0%49.3%40.4%75.8%31.8%53.5%46.5%51.0%100---100.0%-0.0%16.7%--40.6%9.4%--------12.93-85.0%79.0%-66.9%24.0%96.7---18.7%-66.7%71.8%-----56.3%
2 / 2 models
AttributeGPT-5.2

OpenAI

GPT-5.5

OpenAI

DescriptionGPT-5.2 is an AI model from OpenAI.GPT-5.5 is an AI model from OpenAI.
FamilyGPTGPT
Params--
Open weightsclosedclosed
Licenseproprietaryproprietary
Released11 Dec 202523 Apr 2026
Context400,0001,050,000
Input $/1M$1.75$5.00
Output $/1M$14.00$30.00
Cache read $/1M$0.175$0.500
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiesfile, image, textfile, image, text
Providers--
PublisherOpenAIOpenAI
Reported scores

FAQ

Is GPT-5.2 or GPT-5.5 better?
Across the 27 benchmarks both models report on Sophon, GPT-5.5 leads on 24 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GPT-5.2 and GPT-5.5 compare on GPQA Diamond?
GPT-5.2 scores 71.2% and GPT-5.5 scores 76.8% on GPQA Diamond.
Which is cheaper, GPT-5.2 or GPT-5.5?
GPT-5.2 is cheaper at $14.00 per million output tokens against $30.00 for GPT-5.5 - about 2.1x.
When were GPT-5.2 and GPT-5.5 released?
GPT-5.2 was released 11 Dec 2025 by OpenAI. GPT-5.5 was released 23 Apr 2026 by OpenAI.

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