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GLM-4.5 Air vs GPT-4o
Comprehensive side-by-side LLM comparison
GLM-4.5 Air leads with 26.8% higher average benchmark score. GPT-4o offers 12.3K more tokens in context window than GLM-4.5 Air. GLM-4.5 Air is $12.40 cheaper per million tokens. GPT-4o supports multimodal inputs. Overall, GLM-4.5 Air is the stronger choice for coding tasks.
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Zhipu AI
GLM-4.5 Air is a lightweight variant from Zhipu AI's GLM-4 model family, designed for efficient deployments requiring lower inference cost while maintaining strong language understanding and generation capabilities. It targets cost-sensitive production workloads, API integrations, and applications where the full GLM-4.x series capacity exceeds requirements.
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OpenAI
GPT-4o, released by OpenAI in May 2024, is a multimodal large language model from the GPT-4 family that natively processes text, image, and audio inputs in a single end-to-end model. It features a 128K token context window and demonstrated competitive performance across coding, reasoning, and vision benchmarks at its release. GPT-4o targets general-purpose assistant applications, vision-enabled workflows, and use cases requiring low-latency multimodal understanding.
1 year newer
GPT-4o
OpenAI
2024-05-13
GLM-4.5 Air
Zhipu AI
2025-07-28
Pricing Comparison
Cost per million tokens (USD)
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GLM-4.5 Air
Input:$0.05
Output:$0.05($12.40 cheaper)
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GPT-4o
Input:$2.50
Output:$10.00
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GLM-4.5 Air
Average Score:34.0%(+26.8%)
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GPT-4o
Average Score:7.2%
Performance comparison across key benchmark categories
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GLM-4.5 Air
Tool Use34.0%(+26.8%)
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GPT-4o
Tool Use7.2%
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Knowledge Cutoff
Training data recency comparison
GPT-4o
2024-04
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GLM-4.5 Air
1 providers
Zhipu AI
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GPT-4o
1 providers
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GLM-4.5 Air
Avg Score:34.0%(+26.8%)
Providers:1
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GPT-4o
Avg Score:7.2%
Providers:1