GPT-5.2 vs o3 Mini
Compare GPT-5.2 and o3 Mini, both from OpenAI, context windows of 400K vs 64K, tested across 53 shared challenges.
Our Verdict
GPT-5.2
o3 MiniRunner-up
No community votes yet. On paper, GPT-5.2 has the edge — bigger model tier, newer, bigger context window.
o3 Mini is 3.2x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-5.2
Input
$1.75
Output
$14.00
o3 Mini
Input
$1.10
1.6× cheaper
Output
$4.40
3.2× cheaper
o3 Mini is cheaper on both — 1.6× input, 3.2× output
Writing DNA
Style Comparison
Similarity
64%
GPT-5.2 uses 5.8x more emoji
GPT-5.2
o3 Mini
64%Vocabulary65%
16wSentence Length17w
0.34Hedging0.74
9.4Bold3.9
3.9Lists1.7
0.06Emoji0.00
0.89Headings0.47
0.31Transitions0.38
Based on 15 + 12 text responses
Research
What we learned reading every model
FAQ
Common questions
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