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OpenAI

GPT-5 mini

VS
Z.ai (Zhipu AI)

GLM-5

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

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, GPT-5 mini is the premium intelligence choice, scoring 45.7% higher on coding benchmarks. It also maintains strong cost efficiency. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GLM-5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of GPT-5 mini fully justifies the cost.

Model Specs

GPT-5 mini

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+)
45.7%
Reasoning (gpqa-diamond)
81.6%

Cost & Performance

Cost (per 1M tokens)2.3x cheaper
$0.69Input: $0.25 | Output: $2.00
Speed
86 tps
Context WindowLarger
400k tokens
Model Specs

GLM-5

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+4.4%)
86%

Cost & Performance

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

Frequently Asked Questions

GPT-5 mini is cheaper than GLM-5. GPT-5 mini has a blended cost of $0.69/1M tokens, which is about 2.3x cheaper than GLM-5 at $1.55/1M tokens.

Speed data is not available for GLM-5, while GPT-5 mini generates 86 tokens per second.

GPT-5 mini is better for coding tasks. It scores 45.7% on coding evaluations (swe-bench-pro) compared to GLM-5 which scores N/A.

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