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  5. OpenAI Codex MinivsLlama 4 Maverick
Updated May 2025

OpenAI Codex MinivsLlama 4 Maverick

Llama 4 Maverick has a larger context window than OpenAI Codex Mini (1.0M tokens vs 200K tokens).

OpenAI Codex Mini and Llama 4 Maverick compared across 10 shared prompts
SpecOpenAI Codex MiniLlama 4 Maverick
Input price$1.5/M tokens$1.5/M tokens
Output price$6/M tokens$2.5/M tokens
Context window200K tokens1.0M tokens
ParametersNot disclosed17B active (400B total)
Weights—Open
Free API (OpenRouter)NoNo
ReleasedMay 2025Apr 2025
Side by side

Same prompt, both answers

Opening lines from 2 of the 10 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

OpenAI Codex Mini595 words
[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.
Read the full answer
Llama 4 Maverick431 words
Here's a possible 3-minute stand-up comedy routine that isn't based on puns: "Hey, you know what's wild? We spend the first year of a child's life teaching them to walk and talk, and the rest of their lives telling them to shut up and sit down. (pause) It's like, what are we even doing?
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

OpenAI Codex Mini75 words
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.
Read the full answer
Llama 4 Maverick136 words
Here are 5 jokes: 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. Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle?
Read the full answer
Our Verdict
Llama 4 Maverick
Llama 4 Maverick
OpenAI Codex Mini
OpenAI Codex MiniRunner-up

Not enough votes to call it. On the specs, Llama 4 Maverick has the edge: bigger model tier, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

OpenAI Codex Mini
Input
$1.50
Output
$6.00
Llama 4 Maverick
Input
$1.50
Output
$2.50
2.4× cheaper
Where to run it

5 hosts, cheapest first

OpenAI Codex Mini

No hosts listed on OpenRouter.

Llama 4 Maverick5 hosts
HostInOutContextUptime
DDigitalOcean$0.19 in·$0.65 out·128k·99.9% upDDeepInfrafp8$0.20 in·$0.80 out·1M·99.8% upNNovitafp8$0.27 in·$0.85 out·1M·99.8% upPParasailfp8$0.35 in·$1.00 out·524k·100% upGoogle Vertex AI$0.35 in·$1.15 out·524k—

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

OpenAI Codex Mini is developed by OpenAI while Llama 4 Maverick is developed by Meta AI. OpenAI Codex Mini has a 200K token context window vs Llama 4 Maverick's 1.0M. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

It depends on your use case. OpenAI Codex Mini and Llama 4 Maverick 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.

OpenAI Codex Mini costs $1.5/M input tokens and Llama 4 Maverick costs $1.5/M input tokens. Llama 4 Maverick is $0.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of OpenAI Codex Mini and Llama 4 Maverick 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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Model pages

OpenAI Codex Mini logo
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