GPT-5.3-CodexvsQwen3 Coder Flash
Qwen3 Coder Flash is cheaper than GPT-5.3-Codex at $0.3/M vs $1.75/M input tokens.
| Spec | GPT-5.3-Codex | Qwen3 Coder Flash |
|---|---|---|
| Input price | $1.75/M tokens | $0.3/M tokens |
| Output price | $14/M tokens | $1.5/M tokens |
| Context window | 400K tokens | 128K tokens |
| Weights | Closed | Closed |
| Free API (OpenRouter) | No | No |
| Released | Feb 2026 | Sep 2025 |
Our Verdict
GPT-5.3-Codex
Qwen3 Coder FlashRunner-up
Not enough votes to call it. On the specs, GPT-5.3-Codex has the edge: bigger model tier, newer, bigger context window, major provider backing.
Qwen3 Coder Flash costs 9.3x less per token.
Slight edge
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-5.3-Codex
Input
$1.75
Output
$14.00
Qwen3 Coder Flash
Input
$0.30
5.8× cheaper
Output
$1.50
9.3× cheaper
Qwen3 Coder Flash is cheaper on both: 5.8× input, 9.3× output.
Where to run it
3 hosts
GPT-5.3-Codex2 hosts
Qwen3 Coder Flash1 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
51%
Qwen3 Coder Flash uses 5.4x more transitions
GPT-5.3-Codex
Qwen3 Coder Flash
65%Vocabulary60%
23wSentence Length85w
0.51Hedging0.56
6.5Bold5.6
6.2Lists5.8
0.16Emoji0.22
1.90Headings1.49
0.03Transitions0.15
Based on 23 + 28 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
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