Gemini 3.5 Flash vs Grok 4.20 Beta
Compare Gemini 3.5 Flash by Google AI against Grok 4.20 Beta by xAI, in 2 community votes, gemini 3.5 flash wins 100% of head-to-head duels, context windows of 1.0M vs 2.0M, tested across 53 shared challenges.
Our Verdict
Gemini 3.5 FlashWinner
Grok 4.20 BetaRunner-up
Pick Gemini 3.5 Flash. In 2 blind votes, Gemini 3.5 Flash wins 100% of the time. That's not luck.
Clear winner
API pricing
Cost per 1M tokens
Gemini 3.5 Flash
Input
$1.50
1.3× cheaper
Output
$9.00
Grok 4.20 Beta
Input
$2.00
Output
$6.00
1.5× cheaper
Gemini 3.5 Flash wins input (1.3× cheaper)·Grok 4.20 Beta wins output (1.5× cheaper)
Writing DNA
Style Comparison
Similarity
52%
Grok 4.20 Beta uses 2.3x more hedging
Gemini 3.5 Flash
Grok 4.20 Beta
59%Vocabulary57%
18wSentence Length20w
0.16Hedging0.35
4.4Bold4.2
3.0Lists3.7
0.00Emoji0.00
0.89Headings0.62
0.11Transitions0.14
Based on 27 + 23 text responses
Research
What we learned reading every model
FAQ
