OpenAI Codex Mini vs GPT-4 Turbo
OpenAI Codex Mini is cheaper than GPT-4 Turbo at $1.5/M vs $10/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 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.
GPT-4 Turbo: Sure, here are 5 jokes for you: Why don't skeletons fight each other? They don't have the guts. What do you call fake spaghetti? An impasta! Why couldn’t the bicycle stand up by itself? It was two-tired. What do you call cheese that isn't yours? Nacho cheese! How do you organize a space party? You planet.
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.
GPT-4 Turbo: Hey everyone! Great to be here! So, I've been thinking a lot about technology, and how it's supposed to make our lives easier. But sometimes, I feel like it just gives us a whole new set of problems. Like, remember when a phone was just a phone? Now it's my camera, my GPS, my fitness tracker...
Price and specs
| Spec | OpenAI Codex Mini | GPT-4 Turbo |
|---|---|---|
| Input price | $1.5/M tokens | $10/M tokens |
| Output price | $6/M tokens | $30/M tokens |
| Context window | 200K tokens | 128K tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Apr 2024 |
| At 10M a month | $15.00 | $100 |
Input tokens at list price. No caching, no batch discount.
Where to run it
OpenAI Codex Mini
No hosts listed on OpenRouter.
GPT-4 Turbo1 host
Per million tokens. Prices and uptime via OpenRouter, checked 12 Oct 2026.
Common questions
What is the difference between OpenAI Codex Mini and GPT-4 Turbo?
Both are developed by OpenAI but target different use cases. OpenAI Codex Mini has a 200K token context window vs GPT-4 Turbo's 128K. 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 GPT-4 Turbo?
It depends on your use case. OpenAI Codex Mini and GPT-4 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 GPT-4 Turbo?
OpenAI Codex Mini costs $1.5/M input tokens and GPT-4 Turbo costs $10/M input tokens. OpenAI Codex Mini is $8.50/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 GPT-4 Turbo on Rival?
This page shows a side-by-side comparison of OpenAI Codex Mini and GPT-4 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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