OpenAI Codex Mini vs 
Seed 2.1 Turbo
Seed 2.1 Turbo is cheaper than OpenAI Codex Mini at $0.5/M vs $1.5/M input tokens.
Pokémon Battle UI Recreation
Pokémon battle screen you can actually click. One HTML file.
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Which answer wins?
Written rounds
2 promptsThree 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.
Seed 2.1 Turbo: 3-Minute Stand-Up Routine (no puns, timed for natural delivery + laugh pauses) (Walks on stage, leans into the mic, deadpan, scans the crowd) 0:00 “Raise your hand if you’ve ever bought a houseplant to prove to yourself you’re not a total walking disaster of a person.
Five 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.
Seed 2.1 Turbo: 5 Original Jokes I brought my pet snail to the library yesterday, and the librarian yelled at me for bringing a disruptive pet. I said, “Disruptive? He’s the quietest thing I own!”
Price and specs
Not enough votes to call it. On the specs, Seed 2.1 Turbo has the edge: bigger model tier, newer.
| Spec | OpenAI Codex Mini | Seed 2.1 Turbo |
|---|---|---|
| Input price | $1.5/M tokens | $0.5/M tokens |
| Output price | $6/M tokens | $2.5/M tokens |
| Context window | 200K tokens | 262K tokens |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Aug 2026 |
| At 10M a month | $15.00 | $5.00 |
Input tokens at list price. No caching, no batch discount.
Where to run it
OpenAI Codex Mini
No hosts listed on OpenRouter.
Seed 2.1 Turbo1 host
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between OpenAI Codex Mini and Seed 2.1 Turbo?
OpenAI Codex Mini is developed by OpenAI while Seed 2.1 Turbo is developed by ByteDance. OpenAI Codex Mini has a 200K token context window vs Seed 2.1 Turbo's 262K. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.
Which is better, OpenAI Codex Mini or Seed 2.1 Turbo?
It depends on your use case. OpenAI Codex Mini and Seed 2.1 Turbo each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.
How much does OpenAI Codex Mini cost compared to Seed 2.1 Turbo?
OpenAI Codex Mini costs $1.5/M input tokens and Seed 2.1 Turbo costs $0.5/M input tokens. Seed 2.1 Turbo is $1.00/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 Seed 2.1 Turbo on Rival?
This page shows a side-by-side comparison of OpenAI Codex Mini and Seed 2.1 Turbo 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.
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