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GLM-4.5 Air vs GPT-5.1
Comprehensive side-by-side LLM comparison
GPT-5.1 leads with 10.5% higher average benchmark score. GPT-5.1 supports multimodal inputs. Overall, GPT-5.1 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-5.1, released by OpenAI in November 2025, is a large language model from the GPT-5 family that delivers incremental improvements in reasoning, instruction following, and multimodal understanding over GPT-5. It features a 400K token context window and targets general-purpose development, long-context analysis, and agentic workflows.
3 months newer
GLM-4.5 Air
Zhipu AI
2025-07-28
GPT-5.1
OpenAI
2025-11
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%
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GPT-5.1
Average Score:44.5%(+10.5%)
Performance comparison across key benchmark categories
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GLM-4.5 Air
Tool Use34.0%
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GPT-5.1
Tool Use44.5%(+10.5%)
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-5.1
0 providers
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GLM-4.5 Air
Avg Score:34.0%
Providers:1
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GPT-5.1
Avg Score:44.5%(+10.5%)
Providers:0