GPT-4.5 vs Qwen3 Coder Flash
Compare GPT-4.5 by OpenAI against Qwen3 Coder Flash by Qwen, context windows of 128K vs 128K, tested across 25 shared challenges.
Our Verdict
GPT-4.5
Qwen3 Coder FlashRunner-up
No community votes yet. On paper, GPT-4.5 has the edge — bigger model tier, major provider backing.
Qwen3 Coder Flash is 100x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.5
Input
$75.00
Output
$150.00
Qwen3 Coder Flash
Input
$0.30
250× cheaper
Output
$1.50
100× cheaper
Qwen3 Coder Flash is cheaper on both — 250× input, 100× output
Writing DNA
Style Comparison
Similarity
52%
Qwen3 Coder Flash uses 5.8x more sentence length
GPT-4.5
Qwen3 Coder Flash
63%Vocabulary60%
16wSentence Length92w
0.57Hedging0.60
4.7Bold6.1
6.4Lists6.2
0.00Emoji0.00
1.30Headings1.64
0.54Transitions0.18
Based on 11 + 22 text responses
Research
What we learned reading every model
FAQ
