xAI: Grok 4.5 vs MiniMax M2.5
Compare xAI: Grok 4.5 by xAI against MiniMax M2.5 by MiniMax, context windows of 500K vs 205K, tested across 53 shared challenges.
Our Verdict
xAI: Grok 4.5
MiniMax M2.5Runner-up
No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window, major provider backing.
MiniMax M2.5 is 5.0x 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
MiniMax M2.5
Input
$0.30
6.7× cheaper
Output
$1.20
5.0× cheaper
MiniMax M2.5 is cheaper on both — 6.7× input, 5.0× output
Writing DNA
Style Comparison
Similarity
38%
xAI: Grok 4.5 uses 6.2x more emoji
xAI: Grok 4.5
MiniMax M2.5
61%Vocabulary55%
16wSentence Length25w
0.23Hedging0.58
2.5Bold6.0
2.4Lists4.4
0.09Emoji0.01
0.48Headings1.11
0.06Transitions0.16
Based on 27 + 23 text responses
Research
What we learned reading every model
FAQ
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