GPT-5.4 Mini vs xAI: Grok 4.3
Compare GPT-5.4 Mini by OpenAI against xAI: Grok 4.3 by xAI, context windows of 400K vs 1.0M, tested across 53 shared challenges.
Our Verdict
xAI: Grok 4.3
GPT-5.4 MiniRunner-up
No community votes yet. On paper, xAI: Grok 4.3 has the edge — bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
GPT-5.4 Mini
Input
$0.75
1.7× cheaper
Output
$4.50
xAI: Grok 4.3
Input
$1.25
Output
$2.50
1.8× cheaper
GPT-5.4 Mini wins input (1.7× cheaper)·xAI: Grok 4.3 wins output (1.8× cheaper)
Writing DNA
Style Comparison
Similarity
30%
GPT-5.4 Mini uses 6.2x more headings
GPT-5.4 Mini
xAI: Grok 4.3
54%Vocabulary62%
20wSentence Length16w
0.72Hedging0.46
6.0Bold2.3
8.3Lists2.5
0.00Emoji0.00
2.11Headings0.34
0.04Transitions0.14
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
