Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. o1-pro supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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
o1-pro was developed as an enhanced version of the o1 reasoning model, designed to provide extended reasoning capabilities with greater depth and reliability. Built for professionals and advanced users tackling complex analytical tasks, it offers enhanced thinking time and reasoning quality for the most demanding applications.
7 months newer

o1-pro
OpenAI
2024-12-17
GLM-4.5-Air
Zhipu AI
2025-07-28
Average performance across 2 common benchmarks
GLM-4.5-Air

o1-pro
o1-pro
2023-09-30
Available providers and their performance metrics
GLM-4.5-Air

o1-pro
GLM-4.5-Air

o1-pro