Anthropic Claude Sonnet 5 VS Z.ai (Zhipu AI) GLM-4.5
Decision Recommendation
⚖️ Editorial Verdict: In our analysis, GLM-4.5 is the premium intelligence choice, scoring 1.0% higher on coding benchmarks. It also maintains strong cost efficiency. If you are building high-volume, simple chatbots or processing massive amounts of text where budget is critical, Claude Sonnet 5 offers excellent cost savings. For agentic reasoning, code refactoring, or complex logical tasks, the accuracy premium of GLM-4.5 fully justifies the cost.
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Model Specs
Claude Sonnet 5
Benchmarks & Scores
Coding (swe-bench-pro)
63.2%excellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
N/Agraduate-level science QA
Cost & Performance
Cost (per 1M tokens)
$4.00Input: $2.00 | Output: $10.00Context WindowLarger
1.05M tokensModel Specs
GLM-4.5
Benchmarks & Scores
Coding (swe-bench-verified)
64.2%good at editing existing code, cross-file updates, and multi-component systems
Reasoning (gpqa-diamond)
79.9%graduate-level science QA
Cost & Performance
Cost (per 1M tokens)4.0x cheaper
$1.00Input: $0.60 | Output: $2.20Context Window
131.07k tokensFrequently Asked Questions about Claude Sonnet 5 vs GLM-4.5 comparison
GLM-4.5 is cheaper than Claude Sonnet 5. GLM-4.5 has a blended cost of $1.00/1M tokens, which is about 4.0x cheaper than Claude Sonnet 5 at $4.00/1M tokens.
For coding tasks, Claude Sonnet 5 scores 63.2% on swe-bench-pro (excellent at multi-file repositories, autonomous agents, and industrial codebases), while GLM-4.5 scores 64.2% on swe-bench-verified (good at editing existing code, cross-file updates, and multi-component systems).
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