Comprehensive side-by-side LLM comparison
GLM-4.5-Air leads with 27.0% higher average benchmark score. GPT-4 Turbo is available on 2 providers. Overall, GLM-4.5-Air is the stronger choice for coding tasks.
Zhipu AI
GLM-4.5 Air was created as a lightweight variant of GLM-4.5, designed to provide strong bilingual capabilities with improved efficiency. Built to serve applications requiring practical deployment with reduced resource requirements, it extends GLM-4.5's multilingual strengths to resource-conscious scenarios.
OpenAI
GPT-4 Turbo was introduced as an optimized version of GPT-4, designed to provide enhanced performance with improved efficiency and an expanded context window. Built with updated knowledge and refined capabilities, it offered developers a more cost-effective way to leverage GPT-4's advanced reasoning while handling longer conversations and documents.
1 year newer

GPT-4 Turbo
OpenAI
2024-04-09
GLM-4.5-Air
Zhipu AI
2025-07-28
Context window and performance specifications
Average performance across 1 common benchmarks
GLM-4.5-Air

GPT-4 Turbo
GPT-4 Turbo
2023-12-31
Available providers and their performance metrics
GLM-4.5-Air

GPT-4 Turbo
Azure
GLM-4.5-Air

GPT-4 Turbo
GLM-4.5-Air

GPT-4 Turbo
OpenAI