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Claude Sonnet 4.5 vs GLM-4.5
Comprehensive side-by-side LLM comparison
Claude Sonnet 4.5 leads with 9.2% higher average benchmark score. Claude Sonnet 4.5 offers 1.9K more tokens in context window than GLM-4.5. GLM-4.5 is $16.00 cheaper per million tokens. Claude Sonnet 4.5 supports multimodal inputs. Overall, Claude Sonnet 4.5 is the stronger choice for coding tasks.
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Anthropic
Claude Sonnet 4.5 was developed to bridge human thinking and machine assistance, allowing people to work with language and tools in a more conversational and natural way. Built with a focus on turning ideas into results, it represents an evolution in making AI feel less mechanical while maintaining strong capabilities across reasoning, coding, and collaborative tasks.
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Zhipu AI
GLM-4.5 was developed by Zhipu AI as an advanced bilingual language model, designed to excel at both Chinese and English language tasks. Built to serve diverse applications across multiple languages, it represents Zhipu AI's commitment to multilingual AI capabilities.
2 months newer
GLM-4.5
Zhipu AI
2025-07-28
Claude Sonnet 4.5
Anthropic
2025-09-29
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Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4.5
Input:$3.00
Output:$15.00
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GLM-4.5
Input:$0.40
Output:$1.60($16.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 5 common benchmarks
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Claude Sonnet 4.5
Average Score:73.4%(+9.2%)
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GLM-4.5
Average Score:64.2%
Performance comparison across key benchmark categories
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Claude Sonnet 4.5
Coding77.2%(+13.0%)
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GLM-4.5
Coding64.2%
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Knowledge Cutoff
Training data recency comparison
Claude Sonnet 4.5
2025-01-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Claude Sonnet 4.5
2 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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GLM-4.5
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Claude Sonnet 4.5
Avg Score:73.4%(+9.2%)
Providers:2
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GLM-4.5
Avg Score:64.2%
Providers:3