Claude Opus 5 vs MiniMax M3
Compare Claude Opus 5 by Anthropic against MiniMax M3 by MiniMax, context windows of 1.0M vs 1.0M, tested across 53 shared challenges.
Our Verdict
Claude Opus 5
MiniMax M3Runner-up
No community votes yet. On paper, Claude Opus 5 has the edge — bigger model tier, newer, major provider backing.
MiniMax M3 is 21x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Opus 5
Input
$5.00
Output
$25.00
MiniMax M3
Input
$0.30
17× cheaper
Output
$1.20
21× cheaper
MiniMax M3 is cheaper on both — 17× input, 21× output
Writing DNA
Style Comparison
Similarity
70%
MiniMax M3 uses 67.3x more emoji
Claude Opus 5
MiniMax M3
54%Vocabulary55%
21wSentence Length24w
0.40Hedging0.52
3.9Bold5.2
1.9Lists3.0
0.02Emoji1.15
0.71Headings1.21
0.05Transitions0.02
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
