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GLM 5 vs GPT-4o

Head to head on 14 shared benchmarks, with price, context window, and release dates.

Benchmark scores

48

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Model
GLM 5

Zai

62.9%16.4%66.6%7.6%55.2%71.2%73.6%55.3%77.5%38.3%72.8%70.0%39.4%97.4%------7.9%-1598elo70.924.7%-97.982.7%48395-67.9%83.5%69.1%--65.2%-----73.369.7%-61.12-23.4%-56.4%
GPT-4o

OpenAI

45.9%0.3%54.3%2.4%34.3%55.1%46.1%70.1%49.0%33.3%21.6%74.5%8.3%25.1%18.2%15.0%6.0%380.0%0.33-6.1%---96.1---0.0%---30.9%75.9%-10.8%74.8%57.4%54.0%5.71--61.2-0.98-32.5%33.4%
2 / 2 models
AttributeGLM 5

Zai

GPT-4o

OpenAI

DescriptionGLM-5 is an AI model from Zai, released with open weights.GPT-4o is an AI model from OpenAI.
FamilyGlmGPT
Params--
Open weightsopenclosed
Licensemitproprietary
Released11 Feb 202620 Nov 2024
Context204,800128,000
Input $/1M$1.00$2.50
Output $/1M$3.20$10.00
Cache read $/1M$0.120$1.250
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestexttext, image, file
Providers--
PublisherZaiOpenAI
Reported scores
Taubench61.2 pass^1
GSM8K96.1 Accuracy
ScholarSearch5.71 Social Sciences & Humanities (%)
AIME202438 pass@1

FAQ

Is GLM 5 or GPT-4o better?
Across the 14 benchmarks both models report on Sophon, GLM 5 leads on 12 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GLM 5 and GPT-4o compare on GPQA Diamond?
GLM 5 scores 66.6% and GPT-4o scores 54.3% on GPQA Diamond.
Which is cheaper, GLM 5 or GPT-4o?
GLM 5 is cheaper at $3.20 per million output tokens against $10.00 for GPT-4o - about 3.1x.
When were GLM 5 and GPT-4o released?
GLM 5 was released 11 Feb 2026 by Zai. GPT-4o was released 20 Nov 2024 by OpenAI.

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