GPT-5.4 Pro vs MiMo-V2.5
Compare GPT-5.4 Pro by OpenAI against MiMo-V2.5 by Xiaomi, context windows of 1.1M vs 1.0M, tested across 18 shared challenges.
Our Verdict
GPT-5.4 Pro
MiMo-V2.5Runner-up
No community votes yet. On paper, GPT-5.4 Pro has the edge — bigger model tier, major provider backing.
MiMo-V2.5 is 90x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4 Pro
Input
$30.00
Output
$180.00
MiMo-V2.5
Input
$0.40
75× cheaper
Output
$2.00
90× cheaper
MiMo-V2.5 is cheaper on both — 75× input, 90× output
Writing DNA
Style Comparison
Similarity
49%
MiMo-V2.5 uses 100.6x more emoji
GPT-5.4 Pro
MiMo-V2.5
50%Vocabulary57%
35wSentence Length17w
0.70Hedging0.64
7.5Bold5.9
8.3Lists2.8
0.00Emoji1.01
2.52Headings1.07
0.01Transitions0.07
Based on 12 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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