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  5. GPT-5.4vsMiMo-V2.6-Flash
Updated Sep 2026

GPT-5.4vsMiMo-V2.6-Flash

MiMo-V2.6-Flash is cheaper than GPT-5.4 at $0.14/M vs $2.5/M input tokens.

GPT-5.4 and MiMo-V2.6-Flash compared across 10 shared prompts
SpecGPT-5.4MiMo-V2.6-Flash
Input price$2.5/M tokens$0.14/M tokens
Output price$15/M tokens$0.28/M tokens
Context window1.1M tokens1.0M tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedMar 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 5 of the 10 prompts both answered. Formatting stripped, words untouched.

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

GPT-5.42,522 words
Here are the main contractor-unfriendly clauses, why they’re risky, and concrete redlines you should consider. This is business/legal information, not legal advice; for an actual engagement, a lawyer in the relevant jurisdiction should review it.
Read the full answer
MiMo-V2.6-Flash3,600 words
Analysis of Software Consulting Agreement Overview This agreement is extraordinarily one-sided in favor of Client. Nearly every clause contains provisions that could be exploited against the Contractor. Below is a clause-by-clause analysis with specific suggested modifications.
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-5.4811 words
Here’s a simple, beginner-friendly 1-month plan to build a strong foundation for better health and longevity. Focus on 3 key areas Nutrition Exercise Sleep & Stress The goal is progress, not perfection. Start small, stay consistent, and build habits you can actually keep.
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

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

GPT-5.41,322 words
For an experienced software engineer A large language model is easiest to understand as a very large function that maps a sequence of tokens to a probability distribution over the next token. “Tokens” are subword chunks, not necessarily words.
Read the full answer
MiMo-V2.6-Flash1,411 words
How LLMs Learn and Generate Text — Three Audience-Specific Explanations For the Experienced Software Engineer Think of it as an absurdly deep cache with no eviction policy.
Read the full answer

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

GPT-5.41,049 words
Here are the 3 weakest claims in the deck, with why they’re weak and how to improve them. “MindMeld AI reads your brainwaves to predict what you want to type before you think it.” Why this is weak This is the weakest claim because it sounds scientifically incoherent and overhyped.
Read the full answer
MiMo-V2.6-Flash1,530 words
The 3 Weakest Claims in the MindMeld AI Pitch Weakness #1: The $180B TAM (Slide 4) Why It's Weak This is the most internally contradictory claim in the entire deck.
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-5.4169 words
Creative Name: Golden Crunch Honey Garlic Noodles 7 Pantry Ingredients: Spaghetti or any noodles Garlic Soy sauce Honey Olive oil Red pepper flakes Breadcrumbs Estimated Time: Prep: 5 minutes Cook: 12 minutes Total: 17 minutes Instructions: Cook the noodles according to package directions.
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-5.4
GPT-5.4
MiMo-V2.6-Flash
MiMo-V2.6-FlashRunner-up

Not enough votes to call it. On the specs, GPT-5.4 has the edge: bigger model tier, major provider backing.

MiMo-V2.6-Flash costs 54x less per token.

Too close to call
API pricing

Cost per 1M tokens

GPT-5.4
Input
$2.50
Output
$15.00
MiMo-V2.6-Flash
Input
$0.14
18× cheaper
Output
$0.28
54× cheaper

MiMo-V2.6-Flash is cheaper on both: 18× input, 54× output.

Where to run it

5 hosts, cheapest first

GPT-5.43 hosts
HostInOutContextUptime
Azure AI Foundry$2.50 in·$15.00 out·1.1M·100% upOpenAI$2.50 in·$15.00 out·1.1M·100% upAmazon Bedrock$2.75 in·$16.50 out·1.1M—
MiMo-V2.6-Flash2 hosts
HostInOutContextUptime
DDeepInfrafp8$0.14 in·$0.28 out·1M·94.7% upXiaomifp8$0.14 in·$0.28 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GPT-5.4 is developed by OpenAI while MiMo-V2.6-Flash is developed by Xiaomi. GPT-5.4 has a 1.1M token context window vs MiMo-V2.6-Flash'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. GPT-5.4 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.

GPT-5.4 costs $2.5/M input tokens and MiMo-V2.6-Flash costs $0.14/M input tokens. MiMo-V2.6-Flash is $2.36/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 GPT-5.4 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.

Keep exploring

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Same lab, same size, long tail

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Model pages

GPT-5.4 logo
GPT-5.453 outputs, specs and price
MiMo-V2.6-Flash logo
MiMo-V2.6-Flash10 outputs, specs and price
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