GPT-4o (Omni) vs Llama 3.1 405B
Compare GPT-4o (Omni) by OpenAI against Llama 3.1 405B by Meta AI, context windows of 128K vs 128K, tested across 12 shared challenges.
Our Verdict
GPT-4o (Omni)
Llama 3.1 405B
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Llama 3.1 405B is 3.2x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4o (Omni)
Input
$2.50
1.1× cheaper
Output
$10.00
Llama 3.1 405B
Input
$2.70
Output
$3.10
3.2× cheaper
GPT-4o (Omni) wins input (1.1× cheaper)·Llama 3.1 405B wins output (3.2× cheaper)
Writing DNA
Style Comparison
Similarity
46%
GPT-4o (Omni) uses 734.5x more bold
GPT-4o (Omni)
Llama 3.1 405B
54%Vocabulary56%
18wSentence Length15w
0.72Hedging0.41
7.3Bold0.0
5.6Lists1.9
0.03Emoji0.03
1.40Headings0.00
0.26Transitions0.16
Based on 24 + 5 text responses
Research
What we learned reading every model
FAQ
