xAI: Grok 4.5 vs Nova Premier 1.0
Compare xAI: Grok 4.5 by xAI against Nova Premier 1.0 by Amazon, context windows of 500K vs 1.0M, tested across 50 shared challenges.
Our Verdict
xAI: Grok 4.5
Nova Premier 1.0
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 4.5
Input
$2.00
1.3× cheaper
Output
$6.00
2.1× cheaper
Nova Premier 1.0
Input
$2.50
Output
$12.50
xAI: Grok 4.5 is cheaper on both — 1.3× input, 2.1× output
Writing DNA
Style Comparison
Similarity
38%
xAI: Grok 4.5 uses 9.0x more emoji
xAI: Grok 4.5
Nova Premier 1.0
61%Vocabulary56%
16wSentence Length39w
0.23Hedging0.90
2.5Bold4.3
2.4Lists5.9
0.09Emoji0.00
0.48Headings0.54
0.06Transitions0.21
Based on 27 + 23 text responses
Research
What we learned reading every model
FAQ
