GPT-5.5 vs OpenAI o4 Mini High
Compare GPT-5.5 and OpenAI o4 Mini High, both from OpenAI, in 20 community votes, gpt-5.5 wins 63% of head-to-head duels, context windows of 1.1M vs 200K, tested across 53 shared challenges.
Web Design: GPT-5.5 wins 83% of votes
Reasoning: GPT-5.5 and OpenAI o4 Mini High are tied
Conversation: OpenAI o4 Mini High wins 67% of votes
Image Generation: GPT-5.5 wins 100% of votes
Our Verdict
GPT-5.5Winner
OpenAI o4 Mini HighRunner-up
Pick GPT-5.5. In 20 blind votes, GPT-5.5 wins 63% of the time. That's not luck.
Pick GPT-5.5 for Image Generation, Web Design. Pick OpenAI o4 Mini High for Conversation. OpenAI o4 Mini High is 6.8x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
GPT-5.5
Input
$5.00
Output
$30.00
OpenAI o4 Mini High
Input
$1.10
4.5× cheaper
Output
$4.40
6.8× cheaper
OpenAI o4 Mini High is cheaper on both — 4.5× input, 6.8× output
Writing DNA
Style Comparison
Similarity
47%
GPT-5.5 uses 285.6x more bold
GPT-5.5
OpenAI o4 Mini High
58%Vocabulary70%
18wSentence Length18w
0.74Hedging0.33
2.9Bold0.0
5.1Lists1.3
0.00Emoji0.02
1.68Headings0.00
0.03Transitions0.04
Based on 26 + 14 text responses
Research
What we learned reading every model
FAQ
