GPT 4o vs GLM 5.2
OpenAI's original omni model supporting text and image inputs.
Z.ai's frontier reasoning model for long-context agents and software engineering.
No captured outputs for these models yet.
Frequently Asked Questions: GPT 4o vs GLM 5.2▼
Which is better, GPT 4o or GLM 5.2?
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Based on the Capability Index, GLM 5.2 scores higher (83.4 vs 63.0). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, GPT 4o or GLM 5.2?
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GLM 5.2 has a lower blended cost. GPT 4o: $2.50 input / $10.00 output. GLM 5.2: $1.40 input / $4.40 output.
Which has a larger context window, GPT 4o or GLM 5.2?
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GLM 5.2 has a larger context window: GPT 4o supports 128K tokens vs GLM 5.2 at 262K tokens.
Do both GPT 4o and GLM 5.2 support vision?
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GPT 4o supports vision/image input, but GLM 5.2 does not.
Which has better coding performance, GPT 4o or GLM 5.2?
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GLM 5.2 scores higher on SWE-bench Verified: GPT 4o resolves 31% vs GLM 5.2 at 79%.
What are the key differences between GPT 4o and GLM 5.2?
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Key differences: GLM 5.2 has a notably higher capability index (20.4 point gap); only GPT 4o supports vision input; only GLM 5.2 offers extended reasoning mode. 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 GPT 4o and GLM 5.2 for free on idapt.app to see which performs better for your specific needs.