GPT-5
Nothing here. The model returned empty. We stared at it for a while.
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 38 shared challenges. Updated April 2026.
Which is better, GPT-5 or xAI: Grok 4?
GPT-5 is the better choice overall, winning 67% of 13 blind community votes on Rival. GPT-5 costs $1.25/M input tokens vs $3/M for xAI: Grok 4. Context windows: 400K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between GPT-5 and xAI: Grok 4
GPT-5 is made by openai while xAI: Grok 4 is from xai. GPT-5 has a 400K token context window compared to xAI: Grok 4's 256K. On pricing, GPT-5 costs $1.25/M input tokens vs $3/M for xAI: Grok 4. In community voting, In 13 community votes, GPT-5 wins 67% of head-to-head duels.
In 13 community votes, GPT-5 wins 67% of head-to-head duels. GPT-5 leads in Image Generation, Reasoning, while xAI: Grok 4 leads in Web Design. Based on blind community voting from the Rival open dataset of 13+ human preference judgments for this pair.
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
Writing DNA
Style Comparison
Similarity
98%
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
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279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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