Grok 3 vs Grok 4.20 Beta
Compare Grok 3 and Grok 4.20 Beta, both from xAI, context windows of 128K vs 2.0M, tested across 52 shared challenges. Updated April 2026.
Which is better, Grok 3 or Grok 4.20 Beta?
Grok 3 and Grok 4.20 Beta are both competitive models. Context windows: 128K vs 2000K tokens. Compare their real outputs side by side below.
Key Differences Between Grok 3 and Grok 4.20 Beta
Grok 3 is made by xai while Grok 4.20 Beta is from xai. Grok 3 has a 128K token context window compared to Grok 4.20 Beta's 2000K.
API pricing
Per 1M tokens
Grok 3
Input
—
Output
—
Grok 4.20 Beta
Input
$2.00
Output
$6.00
Our Verdict
Grok 4.20 Beta
Grok 3Runner-up
No community votes yet. On paper, Grok 4.20 Beta has the edge — newer, bigger context window.
Too close to call
Writing DNA
Style Comparison
Similarity
55%
Grok 3 uses 3.9x more emoji
Grok 3
Grok 4.20 Beta
49%Vocabulary57%
18wSentence Length20w
0.94Hedging0.35
2.5Bold4.2
3.0Lists3.7
0.04Emoji0.00
0.65Headings0.62
0.08Transitions0.14
Based on 17 + 23 text responses
FAQ
