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GLM-4.5-Air vs Grok 4 Fast
Comprehensive side-by-side LLM comparison
Grok 4 Fast leads with 13.3% higher average benchmark score. Grok 4 Fast supports multimodal inputs. Overall, Grok 4 Fast 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 Fast is a multimodal language model developed by xAI. It achieves strong performance with an average score of 73.0% across 7 benchmarks. It excels particularly in SimpleQA (95.0%), HMMT 2025 (93.3%), AIME 2025 (92.0%). With a 2.0M token context window, it can handle extensive documents and complex multi-turn conversations. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents xAI's latest advancement in AI technology.
1 month newer
GLM-4.5-Air
Zhipu AI
2025-07-28
Grok 4 Fast
xAI
2025-08-28
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Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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GLM-4.5-Air
Average Score:44.4%
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Grok 4 Fast
Average Score:57.6%(+13.3%)
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 Fast
1 providers
xAI
Throughput: 90 tok/s
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GLM-4.5-Air
Avg Score:44.4%
Providers:0
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Grok 4 Fast
Avg Score:57.6%(+13.3%)
Providers:1