GPT-5 CodexvsQwen3.5 9B
Qwen3.5 9B is the newer model, released after GPT-5 Codex.
| Spec | GPT-5 Codex | Qwen3.5 9B |
|---|---|---|
| Input price | — | $0.1/M tokens |
| Output price | — | $0.15/M tokens |
| Context window | — | 262K tokens |
| Weights | — | Open |
| Free API (OpenRouter) | No | No |
| Released | Sep 2025 | Mar 2026 |
Our Verdict
GPT-5 Codex
Qwen3.5 9BRunner-up
Not enough votes to call it. On the specs, GPT-5 Codex has the edge: bigger model tier, major provider backing.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
GPT-5 Codex
Input
—
Output
—
Qwen3.5 9B
Input
$0.10
Output
$0.15
Where to run it
6 hosts, cheapest first
GPT-5 Codex
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
27%
Qwen3.5 9B uses 2.8x more bold
GPT-5 Codex
Qwen3.5 9B
64%Vocabulary48%
17wSentence Length16w
0.38Hedging0.49
2.3Bold6.5
3.5Lists4.3
0.15Emoji0.37
0.49Headings0.86
0.05Transitions0.13
Based on 13 + 25 text responses
Research
What we learned reading every model
FAQ
Common questions
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