xAI: Grok 4 vs Optimus Alpha
Compare xAI: Grok 4 by xAI against Optimus Alpha by OpenRouter, context windows of 256K vs 1.0M, tested across 17 shared challenges. Updated May 2026.
Which is better, xAI: Grok 4 or Optimus Alpha?
xAI: Grok 4 and Optimus Alpha are both competitive models. Context windows: 256K vs 1000K tokens. Compare their real outputs side by side below.
Key Differences Between xAI: Grok 4 and Optimus Alpha
xAI: Grok 4 is made by xai while Optimus Alpha is from openrouter. xAI: Grok 4 has a 256K token context window compared to Optimus Alpha's 1000K.
API pricing
Per 1M tokens
xAI: Grok 4
Input
$3.00
Output
$15.00
Optimus Alpha
Input
—
Output
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Our Verdict
xAI: Grok 4
Optimus Alpha
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
45%
xAI: Grok 4 uses 7.0x more emoji
xAI: Grok 4
Optimus Alpha
53%Vocabulary63%
18wSentence Length18w
0.67Hedging0.55
2.7Bold7.7
2.7Lists5.7
0.07Emoji0.00
0.86Headings0.30
0.04Transitions0.27
Based on 21 + 10 text responses
FAQ
