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  5. GPT-5.1 Codex MaxvsMiMo-V2.6-Pro
Updated Sep 2026

GPT-5.1 Codex MaxvsMiMo-V2.6-Pro

MiMo-V2.6-Pro is the newer model, released after GPT-5.1 Codex Max.

GPT-5.1 Codex Max and MiMo-V2.6-Pro compared across 9 shared prompts
SpecGPT-5.1 Codex MaxMiMo-V2.6-Pro
Input price—$0.435/M tokens
Output price—$0.87/M tokens
Context window—1.0M tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedDec 2025Sep 2026
Side by side

Same prompt, both answers

Opening lines from 2 of the 9 prompts both answered. Formatting stripped, words untouched.

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-5.1 Codex Max175 words
Sunset Chickpea & Tomato Skillet A cozy, savory one-pan dish that comes together with staples you likely have on hand. Ingredients (7): 1 can (15 oz) chickpeas, drained and rinsed 1 can (14–15 oz) crushed tomatoes 1 medium onion, finely chopped 2 cloves garlic, minced (or 1 tsp garlic powder) 2 tbsp olive oil 1 tsp…
Read the full answer
MiMo-V2.6-Pro332 words
🍝 Moonlight Garlic Kiss Pasta A silky, garlicky butter pasta that proves simple ingredients can make something truly unforgettable. 7 Pantry Ingredients # Ingredient Amount 1 Spaghetti (or any pasta) 8 oz (half a standard box) 2 Butter 4 tablespoons 3 Garlic cloves 5 cloves, thinly sliced 4 Parmesan cheese ½ cup…
Read the full answer

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-5.1 Codex Max386 words
Here's a simple four‑week framework to help you ease into healthier habits. It keeps the focus on three big levers you can control and builds gradually so it feels doable. Key areas: Nourishing food, regular movement, and rest/recovery.
Read the full answer
MiMo-V2.6-Pro679 words
🌱 Your 1-Month Health & Longevity Starter Plan The 3 Pillars: Move · Nourish · Recover 🏃 MOVE (Exercise) Goal: Build a consistent, sustainable movement habit. Week 1 — Just Show Up Walk for 20 minutes daily (after lunch or dinner works great).
Read the full answer
Our Verdict
GPT-5.1 Codex Max
GPT-5.1 Codex Max
MiMo-V2.6-Pro
MiMo-V2.6-ProRunner-up

Not enough votes to call it. On the specs, GPT-5.1 Codex Max has the edge: bigger model tier, major provider backing.

Too close to call
API pricing

Cost per 1M tokens

GPT-5.1 Codex Max
Input
—
Output
—
MiMo-V2.6-Pro
Input
$0.43
Output
$0.87
Where to run it

3 hosts

GPT-5.1 Codex Max1 host
HostInOutContextUptime
Azure AI Foundry$1.25 in·$10.00 out·400k·100% up
MiMo-V2.6-Pro2 hosts
HostInOutContextUptime
DDeepInfrafp8$0.43 in·$0.87 out·1M·99.2% upXiaomifp8$0.43 in·$0.87 out·1M·100% up

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

Research

What we learned reading every model

FAQ

Common questions

GPT-5.1 Codex Max is developed by OpenAI while MiMo-V2.6-Pro is developed by Xiaomi. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-5.1 Codex Max and MiMo-V2.6-Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of GPT-5.1 Codex Max and MiMo-V2.6-Pro 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.

Keep exploring

More comparisons

Against the newest arrivals

GPT-5.1 Codex Max logoDeepSeek V4 Flash Vision Exp logo
GPT-5.1 Codex Max vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
MiMo-V2.6-Pro logoSolar Pro 4 logo
MiMo-V2.6-Pro vs Solar Pro 4Landed Sep 2026
GPT-5.1 Codex Max logoHy3 logo
GPT-5.1 Codex Max vs Hy3Landed Sep 2026
MiMo-V2.6-Pro logoQwen3.7 Flash logo
MiMo-V2.6-Pro vs Qwen3.7 FlashLanded Sep 2026
GPT-5.1 Codex Max logoLing 3.0 Flash logo
GPT-5.1 Codex Max vs Ling 3.0 FlashLanded Sep 2026
MiMo-V2.6-Pro logoMuse Glimmer 30B logo
MiMo-V2.6-Pro vs Muse Glimmer 30BLanded Sep 2026
GPT-5.1 Codex Max logoGLM 5.3 logo
GPT-5.1 Codex Max vs GLM 5.3Landed Sep 2026
MiMo-V2.6-Pro logoTernary Bonsai 2 27B logo
MiMo-V2.6-Pro vs Ternary Bonsai 2 27BLanded Sep 2026

Same lab, same size, long tail

GPT-5.1 Codex Max logoGPT-6 Astra Pro logo
GPT-5.1 Codex Max vs GPT-6 Astra ProSame lab
GPT-5.1 Codex Max logoGPT-6 Astra logo
GPT-5.1 Codex Max vs GPT-6 AstraSame lab
MiMo-V2.6-Pro logoMiMo-V2.6-Flash logo
MiMo-V2.6-Pro vs MiMo-V2.6-FlashSame lab
MiMo-V2.6-Pro logoMiMo-V2.5 logo
MiMo-V2.6-Pro vs MiMo-V2.5Same lab
MiMo-V2.6-Pro logoMiMo-V2-Flash logo
MiMo-V2.6-Pro vs MiMo-V2-FlashSame lab
GPT-5.1 Codex Max logoMiMo-V2-Omni logo
GPT-5.1 Codex Max vs MiMo-V2-OmniCross-provider
GPT-5.1 Codex Max logoMiMo-V2-Pro logo
GPT-5.1 Codex Max vs MiMo-V2-ProSame size
GPT-5.1 Codex Max logoMiMo-V2.5 logo
GPT-5.1 Codex Max vs MiMo-V2.5Cross-provider

Model pages

GPT-5.1 Codex Max logo
GPT-5.1 Codex Max53 outputs, specs and price
MiMo-V2.6-Pro logo
MiMo-V2.6-Pro9 outputs, specs and price
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