o3-mini (High) vs Grok 4.5
o3-mini with reasoning effort set to high for maximum STEM 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: o3-mini (High) vs Grok 4.5▼
Which is better, o3-mini (High) or Grok 4.5?
▼
Based on the Capability Index, Grok 4.5 scores higher (88.5 vs 73.9). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Which is cheaper, o3-mini (High) or Grok 4.5?
▼
o3-mini (High) has a lower blended cost. o3-mini (High): $1.10 input / $4.40 output. Grok 4.5: $2.00 input / $6.00 output.
Which has a larger context window, o3-mini (High) or Grok 4.5?
▼
Grok 4.5 has a larger context window: o3-mini (High) supports 200K tokens vs Grok 4.5 at 500K tokens.
Do both o3-mini (High) and Grok 4.5 support vision?
▼
Grok 4.5 supports vision/image input, but o3-mini (High) does not.
What are the key differences between o3-mini (High) and Grok 4.5?
▼
Key differences: Grok 4.5 has a notably higher capability index (14.6 point gap); only Grok 4.5 supports vision input. Compare full specs on this page.
Which model should I choose for my use case?
▼
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 o3-mini (High) and Grok 4.5 for free on idapt.app to see which performs better for your specific needs.