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  5. Mercury 2.5vsSonoma Dusk Alpha
Updated Sep 2026

Mercury 2.5vsSonoma Dusk Alpha

Sonoma Dusk Alpha is cheaper than Mercury 2.5 at $0/M vs $0.04/M input tokens.

Mercury 2.5 and Sonoma Dusk Alpha compared across 2 shared prompts
SpecMercury 2.5Sonoma Dusk Alpha
Input price$0.04/M tokensFree
Output price$0.15/M tokensFree
Context window260K tokens2.0M tokens
Free API (OpenRouter)NoNo
ReleasedSep 2026Sep 2025
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…

Mercury 2.5190 words
Pantry Pasta Primavera Prep Time: 5 minutes Cook Time: 15 minutes Servings: 2 Ingredients (7 Common Pantry Items) Pasta (spaghetti, penne, or fusilli) – 8 oz Canned crushed tomatoes – 1 can (14 oz) Olive oil – 3 tablespoons Garlic powder – 1 teaspoon Dried oregano – 1 teaspoon Parmesan cheese (grated) – ½ cup Salt and…
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Sonoma Dusk Alpha193 words
Pantry Power Pasta Primavera This savory one-pan pasta dish transforms basic pantry staples into a creamy, garlicky delight with a hint of freshness from canned tomatoes. It's quick, comforting, and perfect for a weeknight meal. Serves 2-4.
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…

Mercury 2.5325 words
Here is a simple, actionable 1-month plan to kickstart your journey toward better health and longevity. This guide focuses on three foundational pillars: Nutrition, Movement, and Sleep. Week 1: Awareness & Small Wins Goal: Build habits without overwhelming yourself.
Read the full answer
Sonoma Dusk Alpha713 words
1-Month Plan for Better Health and Longevity This plan is designed for beginners, emphasizing gradual changes to build sustainable habits. We'll focus on three key areas: diet, exercise, and sleep. Each area includes weekly goals to make progress feel achievable. Track your efforts in a simple journal or app.
Read the full answer
Our Verdict
Sonoma Dusk Alpha
Sonoma Dusk Alpha
Mercury 2.5
Mercury 2.5Runner-up

Not enough votes to call it. On the specs, Sonoma Dusk Alpha has the edge: bigger model tier, bigger context window.

Too close to call
API pricing

Cost per 1M tokens

Mercury 2.5
Input
$0.04
Output
$0.15
Sonoma Dusk Alpha
Input
$0.000
Output
$0.000
Where to run it

1 host

Mercury 2.51 host
HostInOutContextUptime
Inception$0.04 in·$0.15 out·260k·100% up
Sonoma Dusk Alpha

No hosts listed on OpenRouter.

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

Research

What we learned reading every model

FAQ

Common questions

Mercury 2.5 is developed by Inception while Sonoma Dusk Alpha is developed by OpenRouter. Mercury 2.5 has a 260K token context window vs Sonoma Dusk Alpha's 2.0M. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

It depends on your use case. Mercury 2.5 and Sonoma Dusk Alpha 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.

Mercury 2.5 costs $0.04/M input tokens and Sonoma Dusk Alpha costs $0/M input tokens. Sonoma Dusk Alpha is $0.04/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 Mercury 2.5 and Sonoma Dusk Alpha 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

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