xAI: Grok 4.5 vs Llama 3.1 70B (Instruct)
Compare xAI: Grok 4.5 by xAI against Llama 3.1 70B (Instruct) by Meta AI, context windows of 500K vs 128K, tested across 52 shared challenges.
Our Verdict
xAI: Grok 4.5
Llama 3.1 70B (Instruct)Runner-up
No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window.
Llama 3.1 70B (Instruct) is 7.6x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
xAI: Grok 4.5
Input
$2.00
Output
$6.00
Llama 3.1 70B (Instruct)
Input
$0.59
3.4× cheaper
Output
$0.79
7.6× cheaper
Llama 3.1 70B (Instruct) is cheaper on both — 3.4× input, 7.6× output
Writing DNA
Style Comparison
Similarity
46%
xAI: Grok 4.5 uses 9.0x more emoji
xAI: Grok 4.5
Llama 3.1 70B (Instruct)
61%Vocabulary51%
16wSentence Length18w
0.23Hedging0.46
2.5Bold3.4
2.4Lists5.6
0.09Emoji0.00
0.48Headings0.00
0.06Transitions0.06
Based on 27 + 15 text responses
Research
What we learned reading every model
FAQ
