DeepSeek V4 Pro vs GPT 5.1 Codex Max
Open-source 1.6T-parameter MoE with 49B active, built for advanced reasoning and long-horizon agents.
Extended-context coding model for large codebase operations.
No captured outputs for these models yet.
Frequently Asked Questions: DeepSeek V4 Pro vs GPT 5.1 Codex Max▼
Which is better, DeepSeek V4 Pro or GPT 5.1 Codex Max?
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Both DeepSeek V4 Pro 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, DeepSeek V4 Pro or GPT 5.1 Codex Max?
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DeepSeek V4 Pro has a lower blended cost. DeepSeek V4 Pro: $0.43 input / $0.87 output. GPT 5.1 Codex Max: $1.25 input / $10.00 output.
Which has a larger context window, DeepSeek V4 Pro or GPT 5.1 Codex Max?
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DeepSeek V4 Pro has a larger context window: DeepSeek V4 Pro supports 1M tokens vs GPT 5.1 Codex Max at 400K tokens.
Do both DeepSeek V4 Pro and GPT 5.1 Codex Max support vision?
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GPT 5.1 Codex Max supports vision/image input, but DeepSeek V4 Pro does not.
What are the key differences between DeepSeek V4 Pro and GPT 5.1 Codex Max?
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Key differences: DeepSeek V4 Pro is significantly cheaper; 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 DeepSeek V4 Pro and GPT 5.1 Codex Max for free on idapt.app to see which performs better for your specific needs.