GPT-4.1 mini vs GLM-4-Air

Performance benchmarks + pricing comparison — updated April 2026

GPT-4.1 mini

OpenAI

Cost-optimized GPT-4.1 variant. Strong coding capability at budget pricing, replacing GPT-4o mini for many use cases.

Input$0.400/M
Output$1.60/M
Context128K tokens
Best ForHigh-volume coding, cost-sensitive projects, automation
Benchmark68/100

GLM-4-Air

Zhipu AI

Zhipu AI's mid-tier model. Good balance of cost and performance for Chinese-language applications.

Input$0.140/M
Output$0.140/M
Context128K tokens
Best ForChinese-language applications, general AI tasks

Cost Comparison by Scenario

Estimated cost per project with 30% cache hit rate. Actual costs may vary based on usage patterns.

ScenarioGPT-4.1 miniGLM-4-AirSavings
Small Script (1K lines) $0.06 <$0.01 GLM-4-Air saves $0.05 (85%)
Medium Feature (10K lines) $0.46 $0.08 GLM-4-Air saves $0.38 (83%)
Large Project (50K lines) $2.30 $0.39 GLM-4-Air saves $1.92 (83%)
Code Review (5K lines) $0.11 $0.03 GLM-4-Air saves $0.08 (75%)

Verdict

GLM-4-Air wins on both price and performance — $0.140/M input with a benchmark score of N/A/100.

For most developers, this is the clear choice between these two models.

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