GPT 5.1 Codex Max vs GLM 5.2
Extended-context coding model for large codebase operations.
Z.ai's frontier reasoning model for long-context agents and software engineering.
No captured outputs for these models yet.
Frequently Asked Questions: GPT 5.1 Codex Max vs GLM 5.2▼
Which is better, GPT 5.1 Codex Max or GLM 5.2?
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Both GPT 5.1 Codex Max 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 5.1 Codex Max or GLM 5.2?
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GLM 5.2 has a lower blended cost. GPT 5.1 Codex Max: $1.25 input / $10.00 output. GLM 5.2: $1.40 input / $4.40 output.
Which has a larger context window, GPT 5.1 Codex Max or GLM 5.2?
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GPT 5.1 Codex Max has a larger context window: GPT 5.1 Codex Max supports 400K tokens vs GLM 5.2 at 262K tokens.
Do both GPT 5.1 Codex Max and GLM 5.2 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 GPT 5.1 Codex Max and GLM 5.2?
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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 GPT 5.1 Codex Max and GLM 5.2 for free on idapt.app to see which performs better for your specific needs.