xAI: Grok 4 Fast (free) vs Qwen: Qwen3.5 397B A17B
Compare xAI: Grok 4 Fast (free) by xAI against Qwen: Qwen3.5 397B A17B by Qwen, context windows of 2.0M vs 262K, tested across 34 shared challenges.
Our Verdict
xAI: Grok 4 Fast (free)
Qwen: Qwen3.5 397B A17B
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
API pricing
Cost per 1M tokens
xAI: Grok 4 Fast (free)
Input
$0.000
Output
$0.000
Qwen: Qwen3.5 397B A17B
Input
$0.60
Output
$3.60
Writing DNA
Style Comparison
Similarity
41%
Qwen: Qwen3.5 397B A17B uses 22.8x more emoji
xAI: Grok 4 Fast (free)
Qwen: Qwen3.5 397B A17B
65%Vocabulary54%
13wSentence Length14w
0.56Hedging0.39
1.4Bold6.9
2.5Lists4.2
0.00Emoji0.23
1.58Headings0.93
0.28Transitions0.17
Based on 14 + 23 text responses
Research
What we learned reading every model
FAQ
