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Z.ai (Zhipu AI)

GLM-4.5

VS
Z.ai (Zhipu AI)

GLM-5

✍️ Analysis by:the whichllmmodel Editorial Team|📅 Updated: June 2026

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, GLM-5 is the premium intelligence choice, scoring 0.0% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GLM-4.5 is 1.6x cheaper to run. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GLM-4.5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of GLM-5 fully justifies the cost.

Model Specs

GLM-4.5

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
79.9%

Cost & Performance

Cost (per 1M tokens)1.6x cheaper
$1.00Input: $0.60 | Output: $2.20
Speed
N/A
Context Window
131.07k tokens
Model Specs

GLM-5

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+6.1%)
86%

Cost & Performance

Cost (per 1M tokens)
$1.55Input: $1.00 | Output: $3.20
Speed
N/A
Context WindowLarger
204.8k tokens

Frequently Asked Questions

GLM-4.5 is cheaper than GLM-5. GLM-4.5 has a blended cost of $1.00/1M tokens, which is about 1.6x cheaper than GLM-5 at $1.55/1M tokens.

Speed metrics are currently unavailable for both models.

Coding benchmark scores are not currently recorded for these models.

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