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GLM 5 vs GPT-5.4 Mini

Head to head on 20 shared benchmarks, with price, context window, and release dates.

Benchmark scores

39

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Model
GLM 5

Zai

62.9%1598elo70.916.4%66.6%7.6%55.2%82.7%71.2%73.6%67.9%55.3%77.5%83.5%69.1%38.3%70.0%39.4%23.4%97.4%---7.9%-24.7%97.94839565.2%---73.369.7%72.8%61.12---56.4%
GPT-5.4 Mini

OpenAI

60.9%1662elo7328.3%60.6%5.9%38.8%80.3%70.9%71.6%70.9%60.3%71.5%78.6%72.5%39.6%71.2%18.2%48.0%23.4%37.0%21.2%3.9%-45.4%----63.5%21.0%50.8%----61.739.6%54.2%48.4%
2 / 2 models
AttributeGLM 5

Zai

GPT-5.4 Mini

OpenAI

DescriptionGLM-5 is an AI model from Zai, released with open weights.GPT-5.4 mini is an AI model from OpenAI.
FamilyGlmGPT
Params--
Open weightsopenclosed
Licensemitproprietary
Released11 Feb 202617 Mar 2026
Context204,800400,000
Input $/1M$1.00$0.75
Output $/1M$3.20$4.50
Cache read $/1M$0.120$0.075
Cache write $/1M--
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestextfile, image, text
Providers--
PublisherZaiOpenAI
Reported scores
GPQA Diamond60.6% (AA)
IFBench38.8% (AA)
SciCode39.6% (AA)

FAQ

Is GLM 5 or GPT-5.4 Mini better?
Across the 20 benchmarks both models report on Sophon, GLM 5 leads on 11 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do GLM 5 and GPT-5.4 Mini compare on GPQA Diamond?
GLM 5 scores 66.6% and GPT-5.4 Mini scores 60.6% on GPQA Diamond.
Which is cheaper, GLM 5 or GPT-5.4 Mini?
GLM 5 is cheaper at $3.20 per million output tokens against $4.50 for GPT-5.4 Mini - about 1.4x.
When were GLM 5 and GPT-5.4 Mini released?
GLM 5 was released 11 Feb 2026 by Zai. GPT-5.4 Mini was released 17 Mar 2026 by OpenAI.

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