GPT-4 vs Grok 3

Compare GPT-4 by OpenAI against Grok 3 by xAI, context windows of 8K vs 128K, tested across 21 shared challenges. Updated April 2026.

Which is better, GPT-4 or Grok 3?

GPT-4 and Grok 3 are both competitive models. Context windows: 8K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between GPT-4 and Grok 3

GPT-4 is made by openai while Grok 3 is from xai. GPT-4 has a 8K token context window compared to Grok 3's 128K.

Our Verdict
Grok 3
Grok 3
GPT-4
GPT-4Runner-up

No community votes yet. On paper, Grok 3 has the edge — newer, bigger context window.

Too close to call
Writing DNA

Style Comparison

Similarity
99%

Grok 3 uses 3.9x more emoji

GPT-4
Grok 3
59%Vocabulary49%
18wSentence Length18w
1.10Hedging0.94
0.8Bold2.5
2.5Lists3.0
0.00Emoji0.04
0.00Headings0.65
0.45Transitions0.08
Based on 15 + 17 text responses
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GPT-4Grok 3

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
FAQ

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