GPT-5.3-Codex vs Qwen: Qwen3.5 397B A17B
Compare GPT-5.3-Codex by OpenAI against Qwen: Qwen3.5 397B A17B by Qwen, in 2 community votes, gpt-5.3-codex and qwen: qwen3.5 397b a17b are closely matched, context windows of 400K vs 262K, tested across 53 shared challenges.
Web Design: GPT-5.3-Codex and Qwen: Qwen3.5 397B A17B are tied
Our Verdict
GPT-5.3-Codex
Qwen: Qwen3.5 397B A17B
Genuinely even. Both are strong choices.
Qwen: Qwen3.5 397B A17B is 3.9x 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
Qwen: Qwen3.5 397B A17B
Input
$0.60
2.9× cheaper
Output
$3.60
3.9× cheaper
Qwen: Qwen3.5 397B A17B is cheaper on both — 2.9× input, 3.9× output
Writing DNA
Style Comparison
Similarity
47%
Qwen: Qwen3.5 397B A17B uses 6.2x more transitions
GPT-5.3-Codex
Qwen: Qwen3.5 397B A17B
65%Vocabulary54%
23wSentence Length14w
0.51Hedging0.39
6.5Bold6.9
6.2Lists4.2
0.16Emoji0.23
1.90Headings0.93
0.03Transitions0.17
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
