Comprehensive side-by-side LLM comparison
o3-pro offers 37.9K more tokens in context window than GLM-4.5. GLM-4.5 is $98.00 cheaper per million tokens. o3-pro supports multimodal inputs. GLM-4.5 is available on 3 providers. Both models have their strengths depending on your specific coding needs.
Zhipu AI
GLM-4.5 was developed by Zhipu AI as an advanced bilingual language model, designed to excel at both Chinese and English language tasks. Built to serve diverse applications across multiple languages, it represents Zhipu AI's commitment to multilingual AI capabilities.
OpenAI
o3-pro was developed as the flagship reasoning model in the o3 family, designed to deliver maximum reasoning depth and reliability for the most challenging analytical tasks. Built for professionals requiring the highest level of thoughtful problem-solving, it extends reasoning capabilities to handle complex multi-step challenges across diverse domains.
1 month newer

o3-pro
OpenAI
2025-06-10
GLM-4.5
Zhipu AI
2025-07-28
Cost per million tokens (USD)
GLM-4.5

o3-pro
Context window and performance specifications
o3-pro
2024-05-31
Available providers and their performance metrics
GLM-4.5
DeepInfra
Novita
ZeroEval

o3-pro
GLM-4.5

o3-pro
GLM-4.5

o3-pro
OpenAI