GPT-4.5 vs O3-mini

GPT-4.5
Factual Accuracy
62.5%
Math & Science
36.7%
Coding Tasks
32.6%
Hallucination Rate
37.1%
O3-mini
Factual Accuracy
15.0%
Math & Science
87.3%
Coding Tasks
61.0%
Hallucination Rate
80.3%

Best Use Cases

GPT-4.5: Everyday tasks, writing, and conversation

O3-mini: Complex math, science, and structured coding