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GLM-4.5 vs GPT-4o
Comprehensive side-by-side LLM comparison
GLM-4.5 leads with 13.8% higher average benchmark score. GLM-4.5 offers 130.0K more tokens in context window than GPT-4o. GLM-4.5 is $10.50 cheaper per million tokens. GPT-4o supports multimodal inputs. Overall, GLM-4.5 is the stronger choice for coding tasks.
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Zhipu AI
GLM-4.5 is a language model developed by Zhipu AI. It achieves strong performance with an average score of 64.0% across 14 benchmarks. It excels particularly in MATH-500 (98.2%), AIME 2024 (91.0%), MMLU-Pro (84.6%). It supports a 262K token context window for handling large documents. The model is available through 3 API providers. It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents Zhipu AI's latest advancement in AI technology.
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OpenAI
GPT-4o is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 77.4% across 8 benchmarks. It excels particularly in MGSM (90.5%), HumanEval (90.2%), MMLU (88.7%). It supports a 132K token context window for handling large documents. The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents OpenAI's latest advancement in AI technology.
1 year newer
GPT-4o
OpenAI
2024-05-13
GLM-4.5
Zhipu AI
2025-07-28
Pricing Comparison
Cost per million tokens (USD)
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GLM-4.5
Input:$0.40
Output:$1.60($10.50 cheaper)
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GPT-4o
Input:$2.50
Output:$10.00
Performance Metrics
Context window and performance specifications
Average performance across 20 common benchmarks
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GLM-4.5
Average Score:44.8%(+13.8%)
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GPT-4o
Average Score:31.0%
Provider Availability & Performance
Available providers and their performance metrics
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GLM-4.5
3 providers
DeepInfra
Novita
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
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GPT-4o
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GLM-4.5
Avg Score:44.8%(+13.8%)
Providers:3
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GPT-4o
Avg Score:31.0%
Providers:2