OpenAI Codex Mini vs 
Qwen3.8 Omni Flash
Qwen3.8 Omni Flash is cheaper than OpenAI Codex Mini at $0.15/M vs $1.5/M input tokens.
Interactive Catan Board
Hex grid you can resize with a slider. Geometry plus state.
Loading the build
Loading the build
Which answer wins?
Written rounds
2 promptsFive jokes on demand, then count how many were actually different.
OpenAI Codex Mini: Sure—here are five jokes: I asked the librarian if books about paranoia were available. She whispered, "They're right behind you." Why did the tomato turn red? Because it saw the salad dressing. I bought a boat because it was for sail. Don't trust stairs—they're always up to something.
Qwen3.8 Omni Flash: My printer and I have a strong bond: whenever I ignore it, it flashes “attention needed.” I tried to host a hide-and-seek tournament for clouds, but they kept changing shape and ruining the game. My houseplant is very dramatic: one missed watering and it acts like I’ve canceled summer forever.
Three minutes of stand-up. Puns are banned.
OpenAI Codex Mini: [Comedian walks onstage] Hey, everyone! Great to see you all tonight. I'm Jamie—if you thought that intro was enthusiastic, you should've seen me when I realized this place has Wi-Fi. Seriously, though, I love stand-up.
Qwen3.8 Omni Flash: Thanks, everybody. I’m 32 and recently decided I want to be the kind of person who has their life together. That lasted four days. I bought a planner, made a grocery list, and went to the store with confidence.
Price and specs
Not enough votes to call it. On the specs, Qwen3.8 Omni Flash has the edge: bigger model tier, newer, bigger context window. Qwen3.8 Omni Flash costs 13x less per token.
| Spec | OpenAI Codex Mini | Qwen3.8 Omni Flash |
|---|---|---|
| Input price | $1.5/M tokens | $0.15/M tokens |
| Output price | $6/M tokens | $0.47/M tokens |
| Context window | 200K tokens | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Sep 2026 |
| At 10M a month | $15.00 | $1.50 |
Input tokens at list price. No caching, no batch discount.
Where to run it
OpenAI Codex Mini
No hosts listed on OpenRouter.
Qwen3.8 Omni Flash1 host
Per million tokens. Prices and uptime via OpenRouter, checked 29 Sep 2026.
Common questions
What is the difference between OpenAI Codex Mini and Qwen3.8 Omni Flash?
OpenAI Codex Mini is developed by OpenAI while Qwen3.8 Omni Flash is developed by Qwen. OpenAI Codex Mini has a 200K token context window vs Qwen3.8 Omni Flash's 1.0M. You can compare their actual outputs across 8 challenges on Rival to see how they differ in practice.
Which is better, OpenAI Codex Mini or Qwen3.8 Omni Flash?
It depends on your use case. OpenAI Codex Mini and Qwen3.8 Omni Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 8 challenges so you can judge which fits your needs best.
How much does OpenAI Codex Mini cost compared to Qwen3.8 Omni Flash?
OpenAI Codex Mini costs $1.5/M input tokens and Qwen3.8 Omni Flash costs $0.15/M input tokens. Qwen3.8 Omni Flash is $1.35/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.
How can I compare OpenAI Codex Mini and Qwen3.8 Omni Flash on Rival?
This page shows a side-by-side comparison of OpenAI Codex Mini and Qwen3.8 Omni Flash across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.
More comparisons
Against the newest arrivals
- OpenAI Codex Mini vs Claude Sonnet 5.5Landed Sep 2026
- Qwen3.8 Omni Flash vs Solar Mini 4Landed Sep 2026
- OpenAI Codex Mini vs Qwen3.8 Max PrimeLanded Sep 2026
- Qwen3.8 Omni Flash vs GLM 5.3 PrimeLanded Sep 2026
- OpenAI Codex Mini vs Command A+Landed Sep 2026
- Qwen3.8 Omni Flash vs Claude Opus 5.5Landed Sep 2026
- OpenAI Codex Mini vs GPT-6 Luna ProLanded Sep 2026
- Qwen3.8 Omni Flash vs GPT-6 Sol ProLanded Sep 2026
Same lab, same size, long tail
- OpenAI Codex Mini vs GPT-6 Sol ProSame lab
- OpenAI Codex Mini vs GPT-6 LunaSame lab
- Qwen3.8 Omni Flash vs Qwen3.8 Max PrimeSame lab
- Qwen3.8 Omni Flash vs Qwen3.7 FlashSame lab
- Qwen3.8 Omni Flash vs Kimi K2New provider
- Qwen3.8 Omni Flash vs Kimi K2 0905New provider
- Qwen3.8 Omni Flash vs Kimi K2 ThinkingNew provider
- Qwen3.8 Omni Flash vs Kimi K2.5Same size
