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

GPT-6 Luna ProvsMiMo-V2.5-Pro

GPT-6 Luna Pro is cheaper than MiMo-V2.5-Pro at $0.1/M vs $1/M input tokens.

GPT-6 Luna Pro and MiMo-V2.5-Pro compared across 19 shared prompts
SpecGPT-6 Luna ProMiMo-V2.5-Pro
Input price$0.1/M tokens$1/M tokens
Output price$0.5/M tokens$3/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 19 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-V2.5-Pro203 words
Dish Name: Pantry Raid Pasta Estimated Time: 10 min prep / 15 min cook Ingredients 250g spaghetti (or any pasta) 3 cloves garlic, thinly sliced 3 tbsp olive oil 1 tsp crushed red pepper flakes 1 tsp smoked paprika 1/2 cup grated Parmesan cheese (or any hard cheese) Salt & black pepper to taste Instructions Cook the…
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-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.
Read the full answer
MiMo-V2.5-Pro581 words
Here’s a simple, actionable 1-month plan to kickstart your health journey. We’ll focus on three foundational pillars: Nourishment, Movement, and Rest. The goal is to build sustainable habits, not perfection. Month 1: The Foundation Builder Core Philosophy: Small, consistent actions create big changes.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

GPT-6 Luna Pro1,906 words
The main architectural risk is that this design treats collaborative editing as ordinary “last write wins” data storage. It is not: edits need a well-defined order, reliable propagation, and a conflict model that preserves concurrent work.
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MiMo-V2.5-Pro1,787 words
Architecture Analysis: Failure Modes, Race Conditions & Bottlenecks This is a thorough red-pen review. There are some genuinely critical issues here — several of which would cause silent data loss in production.
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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-V2.5-Pro3,115 words
The Transistor in 1920: A Counterfactual History Through 1980 This is one of the richest counterfactuals in technological history because the transistor wasn't just an incremental improvement—it was the foundational enabler of the entire digital age.
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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.
Read the full answer
MiMo-V2.5-Pro773 words
"Ephemeral Reef: A Dialogue Between Sea and Forest" Conceptual Narrative This dish explores the convergence of two profound umami sources—the briny, ephemeral sweetness of fresh sea urchin and the deep, earthy complexity of fermented black truffle—through the lens of a submerged coral reef meeting a misty forest floor.
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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-V2.5-Pro760 words
HarborTech Services — LBO Underwrite Sources & Uses $m Uses Enterprise Value (12.0× $120m) 1,440.0 Transaction Fees (2.0%) 28.8 Total Uses 1,468.8 Sources Term Loan (4.0× EBITDA) 480.0 Mezzanine (1.5× EBITDA) 180.0 Total Debt 660.0 44.9% Sponsor Equity 808.8 55.1% Year-by-Year Operating Model (FY2026–FY2030) All…
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Our Verdict
GPT-6 Luna Pro
GPT-6 Luna Pro
MiMo-V2.5-Pro
MiMo-V2.5-Pro

Not enough votes to call it. On the specs, nothing separates them.

GPT-6 Luna Pro costs 6.0x 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
10× cheaper
Output
$0.50
6.0× cheaper
MiMo-V2.5-Pro
Input
$1.00
Output
$3.00

GPT-6 Luna Pro is cheaper on both: 10× input, 6.0× output.

Where to run it

9 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-V2.5-Pro7 hosts
HostInOutContextUptime
Xiaomifp8$0.43 in·$0.87 out·1M·98.4% upDDigitalOcean$0.48 in·$1.80 out·262k·99.7% upNNovita$0.48 in·$0.96 out·1M·96% upGGMI Cloudbf16degraded$0.30 in·$0.61 out·1.1M·93% upDDeepInfrafp8degraded$0.39 in·$1.17 out·1M·87.9% upAAtlasCloudfp8degraded$0.43 in·$0.87 out·1M·92.9% up
1 more hostFewer hosts
SStreamLakedegraded$0.52 in·$1.04 out·1M·92.4% 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-Pro is developed by Xiaomi. GPT-6 Luna Pro has a 1.1M token context window vs MiMo-V2.5-Pro's 1.0M. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.

It depends on your use case. GPT-6 Luna Pro and MiMo-V2.5-Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.

GPT-6 Luna Pro costs $0.1/M input tokens and MiMo-V2.5-Pro costs $1/M input tokens. GPT-6 Luna Pro is $0.90/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-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.

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Same lab, same size, long tail

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Model pages

GPT-6 Luna Pro logo
GPT-6 Luna Pro20 outputs, specs and price
MiMo-V2.5-Pro logo
MiMo-V2.5-Pro57 outputs, specs and price
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