xAI: Grok 4
Nothing here. The model returned empty. We stared at it for a while.
xAI: Grok 4 vs GPT-5
Compare xAI: Grok 4 by xAI against GPT-5 by OpenAI, in 13 community votes, gpt-5 wins 67% of head-to-head duels, context windows of 256K vs 400K, tested across 38 shared challenges. Updated April 2026.
Which is better, xAI: Grok 4 or GPT-5?
GPT-5 is the better choice overall, winning 67% of 13 blind community votes on Rival. xAI: Grok 4 costs $3/M input tokens vs $1.25/M for GPT-5. Context windows: 256K vs 400K tokens. Compare their real outputs side by side below.
Key Differences Between xAI: Grok 4 and GPT-5
xAI: Grok 4 is made by xai while GPT-5 is from openai. xAI: Grok 4 has a 256K token context window compared to GPT-5's 400K. On pricing, xAI: Grok 4 costs $3/M input tokens vs $1.25/M for GPT-5. 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. xAI: Grok 4 leads in Web Design, while GPT-5 leads in Image Generation, Reasoning. 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 xAI: Grok 4 for Web Design. Pick GPT-5 for Reasoning, Image Generation.
Clear winner
Writing DNA
Style Comparison
Similarity
98%
xAI: Grok 4 uses 7.0x more emoji
xAI: Grok 4
GPT-5
53%Vocabulary65%
18wSentence Length13w
0.67Hedging0.20
2.7Bold0.2
2.7Lists4.6
0.07Emoji0.00
0.86Headings0.16
0.04Transitions0.03
Based on 21 + 16 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ