GPT-5.3-Codex vs MiMo-V2.5-Pro
Compare GPT-5.3-Codex by OpenAI against MiMo-V2.5-Pro by Xiaomi, context windows of 400K vs 1.0M, tested across 52 shared challenges.
Our Verdict
GPT-5.3-Codex
MiMo-V2.5-Pro
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-Pro is 4.7x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.3-Codex
Input
$1.75
Output
$14.00
MiMo-V2.5-Pro
Input
$1.00
1.8× cheaper
Output
$3.00
4.7× cheaper
MiMo-V2.5-Pro is cheaper on both — 1.8× input, 4.7× output
Writing DNA
Style Comparison
Similarity
69%
MiMo-V2.5-Pro uses 4.0x more emoji
GPT-5.3-Codex
MiMo-V2.5-Pro
65%Vocabulary58%
23wSentence Length22w
0.51Hedging0.61
6.5Bold5.7
6.2Lists3.1
0.16Emoji0.63
1.90Headings1.40
0.03Transitions0.02
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
