GPT-3.5 Turbo vs GLM-4-Plus

Performance benchmarks + pricing comparison — updated April 2026

GPT-3.5 Turbo

OpenAI

Budget model for simple tasks. Being phased out but still widely used.

Input$0.500/M
Output$1.50/M
Context16K tokens
Best ForSimple chatbots, basic text generation
Benchmark40/100

GLM-4-Plus

Zhipu AI

Zhipu AI's balanced model. Strong Chinese language understanding with competitive coding ability.

Input$0.700/M
Output$0.700/M
Context128K tokens
Best ForChinese applications, code generation, function calling

Cost Comparison by Scenario

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

ScenarioGPT-3.5 TurboGLM-4-PlusSavings
Small Script (1K lines) $0.06 $0.05 GLM-4-Plus saves $0.02 (27%)
Medium Feature (10K lines) $0.48 $0.38 GLM-4-Plus saves $0.09 (19%)
Large Project (50K lines) $2.38 $1.92 GLM-4-Plus saves $0.45 (19%)
Code Review (5K lines) $0.13 $0.14 GPT-3.5 Turbo saves $0.01 (11%)

Verdict

GPT-3.5 Turbo wins on both price and performance — $0.500/M input with a benchmark score of N/A/100.

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

Compare with Other Models