GPT-4.1 vs xAI: Grok 4.5
Compare GPT-4.1 by OpenAI against xAI: Grok 4.5 by xAI, context windows of 1.0M vs 500K, tested across 53 shared challenges.
Our Verdict
GPT-4.1
xAI: Grok 4.5Runner-up
No community votes yet. On paper, GPT-4.1 has the edge — bigger model tier, bigger context window.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.1
Input
$2.00
Output
$8.00
xAI: Grok 4.5
Input
$2.00
Output
$6.00
1.3× cheaper
Writing DNA
Style Comparison
Similarity
42%
GPT-4.1 uses 3.7x more bold
GPT-4.1
xAI: Grok 4.5
58%Vocabulary61%
19wSentence Length16w
0.38Hedging0.23
9.0Bold2.5
6.1Lists2.4
0.24Emoji0.09
1.01Headings0.48
0.07Transitions0.06
Based on 25 + 27 text responses
Research
What we learned reading every model
FAQ
