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  5. GPT-5 CodexvsMiMo-V2.6-Flash
Updated Sep 2026

GPT-5 CodexvsMiMo-V2.6-Flash

MiMo-V2.6-Flash is the newer model, released after GPT-5 Codex.

GPT-5 Codex and MiMo-V2.6-Flash compared across 10 shared prompts
SpecGPT-5 CodexMiMo-V2.6-Flash
Input price—$0.14/M tokens
Output price—$0.28/M tokens
Context window—1.0M tokens
Free API (OpenRouter)NoNo
ReleasedSep 2025Sep 2026
Side by side

Same prompt, both answers

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

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

GPT-5 Codex569 words
1-Month Jumpstart to Better Health & Longevity This plan is designed for beginners and emphasizes steady, sustainable progress. It focuses on three key areas: diet, movement, and sleep & stress. Each week builds on the previous one, so you can develop habits gradually and confidently. 🥗 1.
Read the full answer
MiMo-V2.6-Flash939 words
🌱 Your 1-Month Health & Longevity Starter Plan Philosophy: Don't overhaul everything at once. Build one small habit per week, and let them stack. 📌 The 3 Pillars Nourish — Dietary changes Move — Physical activity Restore — Sleep & stress management Week 1: Foundation (Focus: Awareness) 🥗 Nourish Audit your plate…
Read the full answer

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

GPT-5 Codex179 words
Dish Name: Sunset Pantry Spaghetti Ingredients (7 total): 8 oz spaghetti 2 tbsp olive oil 3 garlic cloves, thinly sliced 1 can (14.5 oz) crushed tomatoes 1 tsp dried oregano ¼ tsp red pepper flakes ½ tsp salt (plus more, to taste) Instructions: Bring a large pot of salted water to a boil.
Read the full answer
MiMo-V2.6-Flash199 words
🍯 Golden Honey-Pepper Skillet Pasta A warm, savory-sweet pasta that tastes like comfort in a bowl. 7 Pantry Ingredients: Pasta (spaghetti or penne) Olive oil (or butter) Garlic Honey Soy sauce Red pepper flakes Salt & pepper (counted as one pantry staple) ⏱️ Times Prep Time 5 minutes Cook Time 12 minutes Total ~17…
Read the full answer
Our Verdict
GPT-5 Codex
GPT-5 Codex
MiMo-V2.6-Flash
MiMo-V2.6-FlashRunner-up

Not enough votes to call it. On the specs, GPT-5 Codex has the edge: bigger model tier, major provider backing.

Too close to call
API pricing

Cost per 1M tokens

GPT-5 Codex
Input
—
Output
—
MiMo-V2.6-Flash
Input
$0.14
Output
$0.28
Where to run it

2 hosts

GPT-5 Codex

No hosts listed on OpenRouter.

MiMo-V2.6-Flash2 hosts
HostInOutContextUptime
Xiaomifp8$0.14 in·$0.28 out·1M·100% upDDeepInfrafp8degraded$0.14 in·$0.28 out·1M·95.3% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GPT-5 Codex is developed by OpenAI while MiMo-V2.6-Flash is developed by Xiaomi. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-5 Codex and MiMo-V2.6-Flash 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.

This page shows a side-by-side comparison of GPT-5 Codex and MiMo-V2.6-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.

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Same lab, same size, long tail

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MiMo-V2.6-Flash vs MiMo-V2.5Same lab
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Model pages

GPT-5 Codex logo
GPT-5 Codex50 outputs, specs and price
MiMo-V2.6-Flash logo
MiMo-V2.6-Flash10 outputs, specs and price
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