ERNIE 4.5 300B A47B vs GPT-5.3-Codex
Compare ERNIE 4.5 300B A47B by Baidu against GPT-5.3-Codex by OpenAI, context windows of 123K vs 400K, tested across 53 shared challenges.
Our Verdict
GPT-5.3-Codex
ERNIE 4.5 300B A47BRunner-up
No community votes yet. On paper, GPT-5.3-Codex has the edge — newer, bigger context window, major provider backing.
ERNIE 4.5 300B A47B is 13x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
ERNIE 4.5 300B A47B
Input
$0.28
6.2× cheaper
Output
$1.10
13× cheaper
GPT-5.3-Codex
Input
$1.75
Output
$14.00
ERNIE 4.5 300B A47B is cheaper on both — 6.2× input, 13× output
Writing DNA
Style Comparison
Similarity
55%
ERNIE 4.5 300B A47B uses 5.9x more emoji
ERNIE 4.5 300B A47B
GPT-5.3-Codex
56%Vocabulary65%
18wSentence Length23w
0.63Hedging0.51
5.3Bold6.5
4.3Lists6.2
0.94Emoji0.16
0.67Headings1.90
0.15Transitions0.03
Based on 27 + 23 text responses
Research
What we learned reading every model
FAQ
