GLM 5.2 vs Claude Sonnet 4.5
Z.ai's frontier reasoning model for long-context agents and software engineering.
High-performance model for real-world agents and coding.
No captured outputs for these models yet.
Frequently Asked Questions: GLM 5.2 vs Claude Sonnet 4.5▼
Which is better, GLM 5.2 or Claude Sonnet 4.5?
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Based on the Capability Index, GLM 5.2 scores higher (83.4 vs 78.9). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, GLM 5.2 or Claude Sonnet 4.5?
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GLM 5.2 has a lower blended cost. GLM 5.2: $1.40 input / $4.40 output. Claude Sonnet 4.5: $3.00 input / $15.00 output.
Which has a larger context window, GLM 5.2 or Claude Sonnet 4.5?
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Claude Sonnet 4.5 has a larger context window: GLM 5.2 supports 262K tokens vs Claude Sonnet 4.5 at 1M tokens.
Do both GLM 5.2 and Claude Sonnet 4.5 support vision?
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Claude Sonnet 4.5 supports vision/image input, but GLM 5.2 does not.
Which has better coding performance, GLM 5.2 or Claude Sonnet 4.5?
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GLM 5.2 scores higher on SWE-bench Verified: GLM 5.2 resolves 79% vs Claude Sonnet 4.5 at 71%.
What are the key differences between GLM 5.2 and Claude Sonnet 4.5?
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Key differences: GLM 5.2 is significantly cheaper; only Claude Sonnet 4.5 supports vision input. Compare full specs on this page.
Which model should I choose for my use case?
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If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both GLM 5.2 and Claude Sonnet 4.5 for free on idapt.app to see which performs better for your specific needs.