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GLM 5 vs GPT-5 Nano

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

Benchmark scores

60

evals · sort by any column, ⤢ to expand fullscreen

Model
GLM 5

Zai

1598elo70.916.4%66.6%7.6%55.2%71.2%73.6%67.9%55.3%77.5%83.5%69.1%38.3%72.8%70.0%39.4%97.4%-----62.9%7.9%--24.7%--97.982.7%48395-----65.2%-----------73.369.7%61.12---23.4%---56.4%
GPT-5 Nano

OpenAI

703elo288.3%42.8%4.0%32.5%52.8%62.4%43.4%55.7%46.8%68.4%40.3%29.1%34.8%67.4%6.8%25.7%0.0%27.3%0.250.216.7%--10.0%78.2%-1.18100.0%---47.0%1.381.38100.0%100.0%-26.7%30.4%72.9%55.6%53.6%100.0%0.0%0.0%12.0%30.4%1.72---29.7%20.41-6.67-82.0%82.0%40.0%43.7%
2 / 2 models
AttributeGLM 5

Zai

GPT-5 Nano

OpenAI

DescriptionGLM-5 is an AI model from Zai, released with open weights.GPT-5 nano is an AI model from OpenAI.
FamilyGlmGPT
Params--
Open weightsopenclosed
Licensemitproprietary
Released11 Feb 20267 Aug 2025
Context204,800400,000
Input $/1M$1.00$0.05
Output $/1M$3.20$0.40
Cache read $/1M$0.120$0.005
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestexttext, image, file
Providers--
PublisherZaiOpenAI
Reported scores

FAQ

Is GLM 5 or GPT-5 Nano better?
Across the 18 benchmarks both models report on Sophon, GLM 5 leads on 17 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GLM 5 and GPT-5 Nano compare on GPQA Diamond?
GLM 5 scores 66.6% and GPT-5 Nano scores 42.8% on GPQA Diamond.
Which is cheaper, GLM 5 or GPT-5 Nano?
GPT-5 Nano is cheaper at $0.40 per million output tokens against $3.20 for GLM 5 - about 8.0x.
When were GLM 5 and GPT-5 Nano released?
GLM 5 was released 11 Feb 2026 by Zai. GPT-5 Nano was released 7 Aug 2025 by OpenAI.

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