xAI: Grok 4.3 vs xAI: Grok 4.5
Compare xAI: Grok 4.3 and xAI: Grok 4.5, both from xAI, context windows of 1.0M vs 500K, tested across 54 shared challenges.
Our Verdict
xAI: Grok 4.3
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
xAI: Grok 4.3
Input
$1.25
1.6× cheaper
Output
$2.50
2.4× cheaper
xAI: Grok 4.5
Input
$2.00
Output
$6.00
xAI: Grok 4.3 is cheaper on both — 1.6× input, 2.4× output
Writing DNA
Style Comparison
Similarity
79%
xAI: Grok 4.5 uses 9.0x more emoji
xAI: Grok 4.3
xAI: Grok 4.5
62%Vocabulary61%
16wSentence Length16w
0.46Hedging0.23
2.3Bold2.5
2.5Lists2.4
0.00Emoji0.09
0.34Headings0.48
0.14Transitions0.06
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
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