whichllmmodel
Back to Dashboard
OpenAI

GPT-5 mini

VS
Z.ai (Zhipu AI)

GLM-5.1

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

Decision Recommendation

⚖️ Editorial Verdict: In our analysis, GLM-5.1 is the premium intelligence choice, scoring 12.7% higher on coding benchmarks. However, this accuracy premium comes with a cost overhead: GPT-5 mini is 2.2x cheaper to run and delivers 1.0x faster throughput. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, GPT-5 mini offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of GLM-5.1 fully justifies the cost.

Model Specs

GPT-5 mini

Benchmarks & Scores

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

Cost & Performance

Cost (per 1M tokens)2.2x cheaper
$0.69Input: $0.25 | Output: $2.00
Speed
86 tps
Context WindowLarger
400k tokens
Model Specs

GLM-5.1

Benchmarks & Scores

Coding (swe-bench-pro)Winner (+12.7%)
58.4%
Reasoning (gpqa-diamond)Winner (+4.6%)
86.2%

Cost & Performance

Cost (per 1M tokens)
$1.50Input: $0.98 | Output: $3.08
Speed
N/A
Context Window
204.8k tokens

Frequently Asked Questions

GPT-5 mini is cheaper than GLM-5.1. GPT-5 mini has a blended cost of $0.69/1M tokens, which is about 2.2x cheaper than GLM-5.1 at $1.50/1M tokens.

Speed data is not available for GLM-5.1, while GPT-5 mini generates 86 tokens per second.

GLM-5.1 is better for coding tasks. It scores 58.4% on coding evaluations (swe-bench-pro) compared to GPT-5 mini which scores 45.7%.

Want to customize weights or add more models?

Open our interactive dashboard where you can adjust your priority levels for speed, budget, or accuracy slider-bars and watch model rankings calculate dynamically.

Customize in Interactive Dashboard