OpenAI Codex Mini vs 
Llama 3 70B
Llama 3 70B is cheaper than OpenAI Codex Mini at $0.59/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 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.
Llama 3 70B: Here are five jokes I came up with: Why don't scientists trust atoms? Because they make up everything. Why don't eggs tell jokes? They'd crack each other up. Why did the scarecrow win an award? Because he was outstanding in his field. What do you call a fake noodle? An impasta. Why did the bicycle fall over?
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.
Llama 3 70B: Here's a 3-minute stand-up comedy routine that doesn't rely on puns: "Hey everyone, you know what's wild? We're all just pretending to be adults, right? Like, I'm pretty sure I'm still 12 years old on the inside. I mean, I still eat cereal for dinner sometimes.
Price and specs
| Spec | OpenAI Codex Mini | Llama 3 70B |
|---|---|---|
| Input price | $1.5/M tokens | $0.59/M tokens |
| Output price | $6/M tokens | $0.79/M tokens |
| Context window | 200K tokens | 8K tokens |
| Parameters | Not disclosed | 70B |
| Weights | — | Open |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Apr 2024 |
| At 10M a month | $15.00 | $5.90 |
Input tokens at list price. No caching, no batch discount.
Common questions
What is the difference between OpenAI Codex Mini and Llama 3 70B?
OpenAI Codex Mini is developed by OpenAI while Llama 3 70B is developed by Meta AI. OpenAI Codex Mini has a 200K token context window vs Llama 3 70B's 8K. 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 Llama 3 70B?
It depends on your use case. OpenAI Codex Mini and Llama 3 70B 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 Llama 3 70B?
OpenAI Codex Mini costs $1.5/M input tokens and Llama 3 70B costs $0.59/M input tokens. Llama 3 70B is $0.91/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 Llama 3 70B on Rival?
This page shows a side-by-side comparison of OpenAI Codex Mini and Llama 3 70B 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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