GPT-4.5 vs o3 Mini
Compare GPT-4.5 and o3 Mini, both from OpenAI, in 14 community votes, gpt-4.5 wins 70% of head-to-head duels, context windows of 128K vs 64K, tested across 25 shared challenges.
Reasoning: GPT-4.5 wins 75% of votes
Web Design: GPT-4.5 and o3 Mini are tied
Image Generation: GPT-4.5 wins 100% of votes
Our Verdict
GPT-4.5Winner
o3 MiniRunner-up
Pick GPT-4.5. In 14 blind votes, GPT-4.5 wins 70% of the time. That's not luck.
GPT-4.5 particularly excels in Image Generation, Reasoning. o3 Mini is 34x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
GPT-4.5
Input
$75.00
Output
$150.00
o3 Mini
Input
$1.10
68× cheaper
Output
$4.40
34× cheaper
o3 Mini is cheaper on both — 68× input, 34× output
Writing DNA
Style Comparison
Similarity
73%
GPT-4.5 uses 3.8x more lists
GPT-4.5
o3 Mini
63%Vocabulary65%
16wSentence Length17w
0.57Hedging0.74
4.7Bold3.9
6.4Lists1.7
0.00Emoji0.00
1.30Headings0.47
0.54Transitions0.38
Based on 11 + 12 text responses
Research
What we learned reading every model
FAQ
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