Llama 3.1 70B (Instruct) vs OpenAI o3
Compare Llama 3.1 70B (Instruct) by Meta AI against OpenAI o3 by OpenAI, tested across 51 shared challenges. Updated May 2026.
Which is better, Llama 3.1 70B (Instruct) or OpenAI o3?
Llama 3.1 70B (Instruct) and OpenAI o3 are both competitive models. Llama 3.1 70B (Instruct) costs $0.59/M input tokens vs $10/M for OpenAI o3. Compare their real outputs side by side below.
Key Differences Between Llama 3.1 70B (Instruct) and OpenAI o3
Llama 3.1 70B (Instruct) is made by meta while OpenAI o3 is from openai. On pricing, Llama 3.1 70B (Instruct) costs $0.59/M input tokens vs $10/M for OpenAI o3.
API pricing
Per 1M tokens
Llama 3.1 70B (Instruct)
Input
$0.59
17× cheaper
Output
$0.79
51× cheaper
OpenAI o3
Input
$10.00
Output
$40.00
Llama 3.1 70B (Instruct) is cheaper on both — 17× input, 51× output
Our Verdict
OpenAI o3
Llama 3.1 70B (Instruct)Runner-up
No community votes yet. On paper, OpenAI o3 has the edge — bigger model tier, newer.
Llama 3.1 70B (Instruct) is 51x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
36%
OpenAI o3 uses 37.9x more headings
Llama 3.1 70B (Instruct)
OpenAI o3
51%Vocabulary68%
18wSentence Length14w
0.46Hedging0.26
3.4Bold0.7
5.6Lists3.0
0.00Emoji0.00
0.00Headings0.38
0.06Transitions0.12
Based on 15 + 16 text responses
FAQ
