GLM 5.2 vs GPT 5.1 Codex Max
Z.ai's frontier reasoning model for long-context agents and software engineering.
Extended-context coding model for large codebase operations.
No captured outputs for these models yet.
Frequently Asked Questions: GLM 5.2 vs GPT 5.1 Codex Max▼
Which is better, GLM 5.2 or GPT 5.1 Codex Max?
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Both GLM 5.2 and GPT 5.1 Codex Max 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, GLM 5.2 or GPT 5.1 Codex Max?
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GLM 5.2 has a lower blended cost. GLM 5.2: $1.40 input / $4.40 output. GPT 5.1 Codex Max: $1.25 input / $10.00 output.
Which has a larger context window, GLM 5.2 or GPT 5.1 Codex Max?
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GPT 5.1 Codex Max has a larger context window: GLM 5.2 supports 262K tokens vs GPT 5.1 Codex Max at 400K tokens.
Do both GLM 5.2 and GPT 5.1 Codex Max support vision?
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GPT 5.1 Codex Max supports vision/image input, but GLM 5.2 does not.
What are the key differences between GLM 5.2 and GPT 5.1 Codex Max?
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Key differences: only GPT 5.1 Codex Max 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 GPT 5.1 Codex Max for free on idapt.app to see which performs better for your specific needs.