Claude Opus 5 vs ERNIE 4.5 300B A47B
Compare Claude Opus 5 by Anthropic against ERNIE 4.5 300B A47B by Baidu, context windows of 1.0M vs 123K, tested across 54 shared challenges.
Our Verdict
Claude Opus 5
ERNIE 4.5 300B A47BRunner-up
No community votes yet. On paper, Claude Opus 5 has the edge — newer, bigger context window, major provider backing.
ERNIE 4.5 300B A47B is 23x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 5
Input
$5.00
Output
$25.00
ERNIE 4.5 300B A47B
Input
$0.28
18× cheaper
Output
$1.10
23× cheaper
ERNIE 4.5 300B A47B is cheaper on both — 18× input, 23× output
Writing DNA
Style Comparison
Similarity
32%
ERNIE 4.5 300B A47B uses 54.8x more emoji
Claude Opus 5
ERNIE 4.5 300B A47B
54%Vocabulary56%
21wSentence Length18w
0.40Hedging0.63
3.9Bold5.3
1.9Lists4.3
0.02Emoji0.94
0.71Headings0.67
0.05Transitions0.15
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
