GPT-5.3-Codex vs Qwen: Qwen3.5 35B A3B
Compare GPT-5.3-Codex by OpenAI against Qwen: Qwen3.5 35B A3B by Qwen, context windows of 400K vs 262K, tested across 53 shared challenges.
Our Verdict
GPT-5.3-Codex
Qwen: Qwen3.5 35B A3BRunner-up
No community votes yet. On paper, GPT-5.3-Codex has the edge — bigger model tier, bigger context window, major provider backing.
Qwen: Qwen3.5 35B A3B is 7.0x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-5.3-Codex
Input
$1.75
Output
$14.00
Qwen: Qwen3.5 35B A3B
Input
$0.25
7.0× cheaper
Output
$2.00
7.0× cheaper
Qwen: Qwen3.5 35B A3B is cheaper on both — 7.0× input, 7.0× output
Writing DNA
Style Comparison
Similarity
40%
GPT-5.3-Codex uses 15.8x more emoji
GPT-5.3-Codex
Qwen: Qwen3.5 35B A3B
65%Vocabulary51%
23wSentence Length15w
0.51Hedging0.39
6.5Bold6.8
6.2Lists4.8
0.16Emoji0.00
1.90Headings0.84
0.03Transitions0.14
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
