GPT-5 vs xAI: Grok 4
Compare GPT-5 by OpenAI against xAI: Grok 4 by xAI, in 13 community votes, gpt-5 wins 67% of head-to-head duels, context windows of 400K vs 256K, tested across 51 shared challenges.
Web Design: xAI: Grok 4 wins 60% of votes
Image Generation: GPT-5 wins 75% of votes
Reasoning: GPT-5 wins 100% of votes
Our Verdict
GPT-5Winner
xAI: Grok 4Runner-up
Pick GPT-5. In 13 blind votes, GPT-5 wins 67% of the time. That's not luck.
Pick GPT-5 for Reasoning, Image Generation. Pick xAI: Grok 4 for Web Design.
Clear winner
API pricing
Cost per 1M tokens
GPT-5
Input
$1.25
2.4× cheaper
Output
$10.00
1.5× cheaper
xAI: Grok 4
Input
$3.00
Output
$15.00
GPT-5 is cheaper on both — 2.4× input, 1.5× output
Writing DNA
Style Comparison
Similarity
67%
xAI: Grok 4 uses 7.0x more emoji
GPT-5
xAI: Grok 4
65%Vocabulary53%
13wSentence Length18w
0.20Hedging0.67
0.2Bold2.7
4.6Lists2.7
0.00Emoji0.07
0.16Headings0.86
0.03Transitions0.04
Based on 16 + 21 text responses
Research
What we learned reading every model
FAQ
Common questions
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