GPT-5.3-Codex vs Llama 4 Maverick
Compare GPT-5.3-Codex by OpenAI against Llama 4 Maverick by Meta AI, context windows of 400K vs 1.0M, tested across 53 shared challenges.
Our Verdict
GPT-5.3-Codex
Llama 4 Maverick
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Llama 4 Maverick is 5.6x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.3-Codex
Input
$1.75
Output
$14.00
Llama 4 Maverick
Input
$1.50
1.2× cheaper
Output
$2.50
5.6× cheaper
Llama 4 Maverick is cheaper on both — 1.2× input, 5.6× output
Writing DNA
Style Comparison
Similarity
40%
GPT-5.3-Codex uses 15.8x more emoji
GPT-5.3-Codex
Llama 4 Maverick
65%Vocabulary42%
23wSentence Length24w
0.51Hedging0.76
6.5Bold3.7
6.2Lists6.3
0.16Emoji0.00
1.90Headings0.74
0.03Transitions0.11
Based on 23 + 12 text responses
Research
What we learned reading every model
FAQ
