xAI: Grok 4.5 vs MiMo-V2.5
Compare xAI: Grok 4.5 by xAI against MiMo-V2.5 by Xiaomi, context windows of 500K vs 1.0M, tested across 54 shared challenges.
Our Verdict
xAI: Grok 4.5
MiMo-V2.5
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
MiMo-V2.5 is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
xAI: Grok 4.5
Input
$2.00
Output
$6.00
MiMo-V2.5
Input
$0.40
5.0× cheaper
Output
$2.00
3.0× cheaper
MiMo-V2.5 is cheaper on both — 5.0× input, 3.0× output
Writing DNA
Style Comparison
Similarity
40%
MiMo-V2.5 uses 11.2x more emoji
xAI: Grok 4.5
MiMo-V2.5
61%Vocabulary57%
16wSentence Length17w
0.23Hedging0.64
2.5Bold5.9
2.4Lists2.8
0.09Emoji1.01
0.48Headings1.07
0.06Transitions0.07
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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