GPT-5.2 vs xAI: Grok 4.5
Compare GPT-5.2 by OpenAI against xAI: Grok 4.5 by xAI, context windows of 400K vs 500K, tested across 52 shared challenges.
Our Verdict
GPT-5.2
xAI: Grok 4.5
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.2
Input
$1.75
1.1× cheaper
Output
$14.00
xAI: Grok 4.5
Input
$2.00
Output
$6.00
2.3× cheaper
GPT-5.2 wins input (1.1× cheaper)·xAI: Grok 4.5 wins output (2.3× cheaper)
Writing DNA
Style Comparison
Similarity
43%
GPT-5.2 uses 5.5x more transitions
GPT-5.2
xAI: Grok 4.5
64%Vocabulary61%
16wSentence Length16w
0.34Hedging0.23
9.4Bold2.5
3.9Lists2.4
0.06Emoji0.09
0.89Headings0.48
0.31Transitions0.06
Based on 15 + 27 text responses
Research
What we learned reading every model
FAQ
