GPT-5 Codex vs Grok 4.20 Multi-Agent Beta
Compare GPT-5 Codex by OpenAI against Grok 4.20 Multi-Agent Beta by xAI, tested across 49 shared challenges.
Our Verdict
GPT-5 Codex
Grok 4.20 Multi-Agent Beta
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
GPT-5 Codex
Input
—
Output
—
Grok 4.20 Multi-Agent Beta
Input
$2.00
Output
$6.00
Writing DNA
Style Comparison
Similarity
71%
GPT-5 Codex uses 14.6x more emoji
GPT-5 Codex
Grok 4.20 Multi-Agent Beta
64%Vocabulary59%
17wSentence Length16w
0.38Hedging0.41
2.3Bold2.7
3.5Lists2.4
0.15Emoji0.00
0.49Headings0.26
0.05Transitions0.02
Based on 13 + 23 text responses
Research
What we learned reading every model
FAQ
