GPT 5 Codex vs GLM 5.2
GPT-5 optimized for code generation and software engineering tasks.
Z.ai's frontier reasoning model for long-context agents and software engineering.
No captured outputs for these models yet.
Frequently Asked Questions: GPT 5 Codex vs GLM 5.2▼
Which is better, GPT 5 Codex or GLM 5.2?
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Both GPT 5 Codex and GLM 5.2 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Which is cheaper, GPT 5 Codex or GLM 5.2?
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GLM 5.2 has a lower blended cost. GPT 5 Codex: $1.25 input / $10.00 output. GLM 5.2: $1.40 input / $4.40 output.
Which has a larger context window, GPT 5 Codex or GLM 5.2?
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GPT 5 Codex has a larger context window: GPT 5 Codex supports 400K tokens vs GLM 5.2 at 262K tokens.
Do both GPT 5 Codex and GLM 5.2 support vision?
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GPT 5 Codex supports vision/image input, but GLM 5.2 does not.
What are the key differences between GPT 5 Codex and GLM 5.2?
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Key differences: only GPT 5 Codex 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 GPT 5 Codex and GLM 5.2 for free on idapt.app to see which performs better for your specific needs.