Grok 3 Thinking vs xAI: Grok 4
Compare Grok 3 Thinking and xAI: Grok 4, both from xAI, context windows of 128K vs 256K, tested across 13 shared challenges. Updated April 2026.
Which is better, Grok 3 Thinking or xAI: Grok 4?
Grok 3 Thinking and xAI: Grok 4 are both competitive models. Context windows: 128K vs 256K tokens. Compare their real outputs side by side below.
Key Differences Between Grok 3 Thinking and xAI: Grok 4
Grok 3 Thinking is made by xai while xAI: Grok 4 is from xai. Grok 3 Thinking has a 128K token context window compared to xAI: Grok 4's 256K.
API pricing
Per 1M tokens
Grok 3 Thinking
Input
—
Output
—
xAI: Grok 4
Input
$3.00
Output
$15.00
Our Verdict
Grok 3 Thinking
xAI: Grok 4
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
Writing DNA
Style Comparison
Similarity
63%
xAI: Grok 4 uses 7.0x more emoji
Grok 3 Thinking
xAI: Grok 4
46%Vocabulary53%
19wSentence Length18w
1.11Hedging0.67
3.3Bold2.7
2.6Lists2.7
0.00Emoji0.07
0.64Headings0.86
0.25Transitions0.04
Based on 6 + 21 text responses
FAQ
