o4-mini (High) vs Grok 4.5
o4-mini with reasoning effort locked to high for maximum accuracy.
xAI's Opus-class flagship for frontier coding, agentic tool use, and knowledge work.
No captured outputs for these models yet.
Frequently Asked Questions: o4-mini (High) vs Grok 4.5▼
Which is better, o4-mini (High) or Grok 4.5?
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Based on the Capability Index, Grok 4.5 scores higher (88.5 vs 78.6). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, o4-mini (High) or Grok 4.5?
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o4-mini (High) has a lower blended cost. o4-mini (High): $1.10 input / $4.40 output. Grok 4.5: $2.00 input / $6.00 output.
Which has a larger context window, o4-mini (High) or Grok 4.5?
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Grok 4.5 has a larger context window: o4-mini (High) supports 200K tokens vs Grok 4.5 at 500K tokens.
Do both o4-mini (High) and Grok 4.5 support vision?
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Yes, both o4-mini (High) and Grok 4.5 support vision/image input.
What are the key differences between o4-mini (High) and Grok 4.5?
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Key differences: Grok 4.5 has a notably higher capability index (9.9 point gap). 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 o4-mini (High) and Grok 4.5 for free on idapt.app to see which performs better for your specific needs.