Grok 3 Thinking vs OpenAI o3
Compare Grok 3 Thinking by xAI against OpenAI o3 by OpenAI, tested across 14 shared challenges.
Our Verdict
Grok 3 Thinking
OpenAI o3
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
—
OpenAI o3
Input
$10.00
Output
$40.00
Writing DNA
Style Comparison
Similarity
34%
Grok 3 Thinking uses 4.8x more bold
Grok 3 Thinking
OpenAI o3
46%Vocabulary68%
19wSentence Length14w
1.11Hedging0.26
3.3Bold0.7
2.6Lists3.0
0.00Emoji0.00
0.64Headings0.38
0.25Transitions0.12
Based on 6 + 16 text responses
Research
What we learned reading every model
FAQ
