Grok 3 Thinking vs xAI: Grok 4.5
Compare Grok 3 Thinking and xAI: Grok 4.5, both from xAI, context windows of 128K vs 500K, tested across 13 shared challenges.
Our Verdict
Grok 3 Thinking
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
Grok 3 Thinking
Input
—
Output
—
xAI: Grok 4.5
Input
$2.00
Output
$6.00
Writing DNA
Style Comparison
Similarity
29%
xAI: Grok 4.5 uses 9.0x more emoji
Grok 3 Thinking
xAI: Grok 4.5
46%Vocabulary61%
19wSentence Length16w
1.11Hedging0.23
3.3Bold2.5
2.6Lists2.4
0.00Emoji0.09
0.64Headings0.48
0.25Transitions0.06
Based on 6 + 27 text responses
Research
What we learned reading every model
FAQ
