Grok 4.5 vs GPT 5.1 Codex Mini
xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.
Compact coding model for fast, cost-efficient development tasks.
No captured outputs for these models yet.
Frequently Asked Questions: Grok 4.5 vs GPT 5.1 Codex Mini▼
Which is better, Grok 4.5 or GPT 5.1 Codex Mini?
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Both Grok 4.5 and GPT 5.1 Codex Mini 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, Grok 4.5 or GPT 5.1 Codex Mini?
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GPT 5.1 Codex Mini has a lower blended cost. Grok 4.5: $2.00 input / $6.00 output. GPT 5.1 Codex Mini: $0.25 input / $2.00 output.
Which has a larger context window, Grok 4.5 or GPT 5.1 Codex Mini?
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Grok 4.5 has a larger context window: Grok 4.5 supports 500K tokens vs GPT 5.1 Codex Mini at 400K tokens.
Do both Grok 4.5 and GPT 5.1 Codex Mini support vision?
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Yes, both Grok 4.5 and GPT 5.1 Codex Mini support vision/image input.
What are the key differences between Grok 4.5 and GPT 5.1 Codex Mini?
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Key differences: GPT 5.1 Codex Mini is significantly cheaper. 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 Grok 4.5 and GPT 5.1 Codex Mini for free on idapt.app to see which performs better for your specific needs.