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  5. Devstral 2 2512vsGPT-6 Luna
Updated Sep 2026

Devstral 2 2512vsGPT-6 Luna

GPT-6 Luna is the newer model, released after Devstral 2 2512.

Devstral 2 2512 and GPT-6 Luna compared across 2 shared prompts
SpecDevstral 2 2512GPT-6 Luna
Input price—$0.1/M tokens
Output price—$0.5/M tokens
Context window—1.1M tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedDec 2025Sep 2026
Side by side

Same prompt, both answers

Opening lines from every prompt 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…

Devstral 2 2512153 words
Dish Name: "Golden Crisp Honey-Nut Bites" A sweet, crunchy, and satisfying treat made with just 7 pantry staples! Ingredients: 1 cup rolled oats ½ cup peanut butter (or any nut/seed butter) ¼ cup honey (or maple syrup) ½ tsp cinnamon ¼ tsp salt 1 tsp vanilla extract (optional but recommended) 2 tbsp chopped nuts…
Read the full answer
GPT-6 Luna113 words
Crispy Parmesan Chickpeas A crunchy, savory snack with a cheesy finish Ingredients (7): 1 can chickpeas, drained and dried 1 tablespoon olive oil ½ teaspoon salt ½ teaspoon paprika ¼ teaspoon garlic powder ¼ cup grated Parmesan 1 tablespoon lemon juice Prep time: 5 minutes Cook time: 30–35 minutes Instructions: Heat…
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…

Devstral 2 2512665 words
Here’s a simple, actionable 1-month plan to kickstart your journey toward better health and longevity, focusing on diet, exercise, and sleep—three foundational pillars. Each week builds on the last, making it sustainable and beginner-friendly.
Read the full answer
GPT-6 Luna330 words
A simple 1-month starter plan Choose three foundations: food, movement, and sleep. Aim for steady habits, not perfection. If you have a health condition, significant pain, or concerns about changing your activity or diet, check with a healthcare professional first.
Read the full answer
Our Verdict
Devstral 2 2512
Devstral 2 2512
GPT-6 Luna
GPT-6 Luna

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

Too close to call
API pricing

Cost per 1M tokens

Devstral 2 2512
Input
—
Output
—
GPT-6 Luna
Input
$0.10
Output
$0.50
Where to run it

4 hosts, cheapest first

Devstral 2 25121 host
HostInOutContextUptime
Mistral$0.40 in·$2.00 out·262k·99.4% up
GPT-6 Luna3 hosts
HostInOutContextUptime
Azure AI Foundry$0.10 in·$0.50 out·1.1M·88.4% upOpenAI$0.10 in·$0.50 out·1.1M·99.9% upAmazon Bedrock$0.11 in·$0.55 out·1.1M·99.8% up

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

Research

What we learned reading every model

FAQ

Common questions

Devstral 2 2512 is developed by Mistral AI while GPT-6 Luna is developed by OpenAI. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

It depends on your use case. Devstral 2 2512 and GPT-6 Luna each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 2 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of Devstral 2 2512 and GPT-6 Luna 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

Devstral 2 2512 logoMistral Small 4 logo
Devstral 2 2512 vs Mistral Small 4Same lab
Devstral 2 2512 logoClaude Opus 4.6 logo
Devstral 2 2512 vs Claude Opus 4.6Same size
GPT-6 Luna logoGPT-6 Luna Pro logo
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GPT-6 Luna logoGPT-6 Sol logo
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GPT-6 Luna logoClaude Sonnet 4.5 logo
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Devstral 2 2512 logoClaude Fable 5 logo
Devstral 2 2512 vs Claude Fable 5Same size
Devstral 2 2512 logoClaude Fable 5.1 logo
Devstral 2 2512 vs Claude Fable 5.1Same size
GPT-6 Luna logoClaude Haiku 4.5 logo
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Model pages

Devstral 2 2512 logo
Devstral 2 251235 outputs, specs and price
GPT-6 Luna logo
GPT-6 Luna20 outputs, specs and price
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