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  5. GPT-6 Luna ProvsMiMo-V2.5
Updated Sep 2026

GPT-6 Luna ProvsMiMo-V2.5

GPT-6 Luna Pro is cheaper than MiMo-V2.5 at $0.1/M vs $0.4/M input tokens.

GPT-6 Luna Pro and MiMo-V2.5 compared across 20 shared prompts
SpecGPT-6 Luna ProMiMo-V2.5
Input price$0.1/M tokens$0.4/M tokens
Output price$0.5/M tokens$2/M tokens
Context window1.1M tokens1.0M tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedSep 2026Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 20 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-6 Luna Pro127 words
Golden Pantry Pancakes Fluffy, lightly sweet pancakes made with everyday staples. Makes: About 6 small pancakes Prep time: 5 minutes Cook time: 10 minutes Ingredients 1 cup all-purpose flour 1 cup milk 1 egg 2 tablespoons sugar 1 teaspoon baking powder ¼ teaspoon salt 2 tablespoons butter, melted (plus a little for the…
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MiMo-V2.5169 words
Sunset Pasta A cozy, umami-packed pasta with a rich tomato-chickpea sauce—ready in under 25 minutes! Ingredients (7 pantry staples): 1 cup dried pasta (any shape) 1 can (15 oz) chickpeas, drained 1 can (14 oz) crushed tomatoes 2 cloves garlic, minced 2 tbsp olive oil 1 tsp cumin Salt and pepper to taste Instructions…
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

GPT-6 Luna Pro1,215 words
Turbot, Sea Buckthorn, Mussel Beurre Blanc, and Celery-Root Silk Serves 4 A composed main course built around an unusual but harmonious pairing: briny mussel and turbot with intensely tart, apricot-like sea buckthorn.
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MiMo-V2.52,073 words
"Tidal Memory" Hokkaido Uni · Black Garlic & White Chocolate Velouté · Kombu-Cured Yolk · Yuzu Kosho Air · Dashi Foam Conceptual Narrative This dish explores the liminal space between land and sea — the tidal zone where two ecosystems bleed into one another.
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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-6 Luna Pro327 words
A simple 1-month plan for better health and longevity Choose three foundations: eating well, moving regularly, and sleeping consistently. Aim for steady habits, not perfection. Diet: Make nourishing choices easier Week 1: Add one serving of fruit or vegetables to one meal each day.
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MiMo-V2.5694 words
🌱 Your 4-Week Health & Longevity Starter Plan Welcome to your first month! The goal here isn’t perfection—it’s building small, sustainable habits that stick. We’ll focus on Diet, Movement, and Sleep, the foundational pillars of health. Each week introduces one new, manageable change in each area.
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

GPT-6 Luna Pro1,661 words
The biggest change would not be that 1920 suddenly gets modern computers. It would be that governments and firms have six or seven extra decades to develop semiconductor materials, manufacturing, and applications.
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MiMo-V2.52,925 words
The Transistor in 1920: A Counterfactual Through 1980 This is a rich question. The transistor's actual 1947 invention at Bell Labs was arguably the most consequential single invention of the 20th century.
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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

GPT-6 Luna Pro434 words
Operating and debt schedule Conventions: Interest is calculated on beginning-of-year debt; the 1% Term Loan amortization is 1% of its original $480m principal ($4.8m annually). Mezzanine PIK accrues at 2% annually.
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MiMo-V2.5656 words
HarborTech Services — 5-Year LBO Underwriting Entry Summary Amount Multiple Enterprise Value $1,440.0m 12.0x Transaction Fees (2.0%) $28.8m — Total Uses $1,468.8m Sources Amount Multiple Term Loan (9.0% cash, 1.0% amort) $480.0m 4.0x Mezzanine (12.0% cash + 2.0% PIK) $180.0m 1.5x Sponsor Equity $808.8m Total Sources…
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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-6 Luna Pro401 words
“94% accuracy” and “works with any language, any device” Why it’s weak: “Accuracy” is undefined. It could mean classifying a small set of prompted words in a controlled lab—not reliably generating free-form text.
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MiMo-V2.5608 words
Based on the provided pitch deck summary, here are the three weakest claims, along with explanations and suggestions for improvement: Weakest Claim: "94% accuracy" Why it's weak: This is the most critical technical claim, yet it's presented without essential context.
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Our Verdict
GPT-6 Luna Pro
GPT-6 Luna Pro
MiMo-V2.5
MiMo-V2.5Runner-up

Not enough votes to call it. On the specs, GPT-6 Luna Pro has the edge: newer, major provider backing.

GPT-6 Luna Pro costs 4.0x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

GPT-6 Luna Pro
Input
$0.10
4.0× cheaper
Output
$0.50
4.0× cheaper
MiMo-V2.5
Input
$0.40
Output
$2.00

GPT-6 Luna Pro is cheaper on both: 4.0× input, 4.0× output.

Where to run it

8 hosts, cheapest first

GPT-6 Luna Pro2 hosts
HostInOutContextUptime
Azure AI Foundry$0.10 in·$0.50 out·1.1M·98.6% upOpenAI$0.10 in·$0.50 out·1.1M·99.9% up
MiMo-V2.56 hosts
HostInOutContextUptime
DDeepInfrafp8$0.13 in·$0.27 out·262k·99.9% upXiaomifp8$0.14 in·$0.28 out·1M·98.5% upVVenicefp8$0.40 in·$2.00 out·1M·94.7% upGGMI Cloudfp8degraded$0.12 in·$0.24 out·1.1M·91.5% upNNovitafp8degraded$0.17 in·$0.34 out·1M·96.1% upSStreamLakedegraded$0.17 in·$0.34 out·1M·87.4% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GPT-6 Luna Pro is developed by OpenAI while MiMo-V2.5 is developed by Xiaomi. GPT-6 Luna Pro has a 1.1M token context window vs MiMo-V2.5's 1.0M. You can compare their actual outputs across 20 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-6 Luna Pro and MiMo-V2.5 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 20 challenges so you can judge which fits your needs best.

GPT-6 Luna Pro costs $0.1/M input tokens and MiMo-V2.5 costs $0.4/M input tokens. GPT-6 Luna Pro is $0.30/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-6 Luna Pro and MiMo-V2.5 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

GPT-6 Luna Pro logo
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