xAI: Grok 4.5 vs Mistral Medium 3.1
Compare xAI: Grok 4.5 by xAI against Mistral Medium 3.1 by Mistral AI, context windows of 500K vs 131K, tested across 54 shared challenges.
Our Verdict
xAI: Grok 4.5
Mistral Medium 3.1Runner-up
No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window, major provider backing.
Mistral Medium 3.1 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
Mistral Medium 3.1
Input
$0.40
5.0× cheaper
Output
$2.00
3.0× cheaper
Mistral Medium 3.1 is cheaper on both — 5.0× input, 3.0× output
Writing DNA
Style Comparison
Similarity
28%
Mistral Medium 3.1 uses 4.4x more emoji
xAI: Grok 4.5
Mistral Medium 3.1
61%Vocabulary52%
16wSentence Length22w
0.23Hedging0.45
2.5Bold10.4
2.4Lists5.9
0.09Emoji0.39
0.48Headings1.12
0.06Transitions0.18
Based on 27 + 22 text responses
Research
What we learned reading every model
FAQ
