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GLM-4.5-Air vs Grok-4 Heavy
Comprehensive side-by-side LLM comparison
Grok-4 Heavy leads with 11.0% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. Overall, Grok-4 Heavy is the stronger choice for coding tasks.
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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.
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xAI
Grok 4 Heavy was created as a larger, more capable variant of Grok 4, designed to provide maximum reasoning depth and analytical capability. Built for the most demanding applications requiring sophisticated problem-solving, it represents xAI's flagship offering in the fourth generation.
19 days newer
Grok-4 Heavy
xAI
2025-07-09
GLM-4.5-Air
Zhipu AI
2025-07-28
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Average performance across 2 common benchmarks
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GLM-4.5-Air
Average Score:72.8%
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Grok-4 Heavy
Average Score:83.9%(+11.0%)
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Knowledge Cutoff
Training data recency comparison
Grok-4 Heavy
2024-12-31
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
0 providers
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Grok-4 Heavy
0 providers
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GLM-4.5-Air
Avg Score:72.8%
Providers:0
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Grok-4 Heavy
Avg Score:83.9%(+11.0%)
Providers:0