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  5. Andromeda AlphavsMercury 2.5
Updated Sep 2026

Andromeda AlphavsMercury 2.5

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

Andromeda Alpha and Mercury 2.5 compared across 2 shared prompts
SpecAndromeda AlphaMercury 2.5
Input priceFree$0.04/M tokens
Output priceFree$0.15/M tokens
Context window128K tokens260K tokens
Free API (OpenRouter)NoNo
ReleasedOct 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…

Andromeda Alpha132 words
Dish Name: Moonlit Mug Cake Ingredients (Serves 1): All-purpose flour (½ cup) Sugar (¼ cup) Cinnamon (1 tsp) Salt (¼ tsp) Unsalted butter (3 tbsp, melted) Milk (⅓ cup) Vanilla extract (1 tsp) Instructions: Prep: In a rainproof mug, whisk together flour, sugar, cinnamon, and salt (1–2 mins).
Read the full answer
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…
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…

Andromeda Alpha449 words
1-Month Plan for Better Health & Longevity Focus: Diet, Exercise, Sleep, Stress Management Week 1: Build Foundations Diet Start a simple food diary (phone app like MyFitnessPal) to track meals for 3 days → Identify gaps/nutrient-rich swaps.
Read the full answer
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
Our Verdict
Mercury 2.5
Mercury 2.5
Andromeda Alpha
Andromeda AlphaRunner-up

Not enough votes to call it. On the specs, Mercury 2.5 has the edge: bigger model tier, newer, bigger context window.

Slight edge
API pricing

Cost per 1M tokens

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

1 host

Andromeda Alpha

No hosts listed on OpenRouter.

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

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

Research

What we learned reading every model

FAQ

Common questions

Andromeda Alpha is developed by OpenRouter while Mercury 2.5 is developed by Inception. Andromeda Alpha has a 128K token context window vs Mercury 2.5's 260K. You can compare their actual outputs across 2 challenges on Rival to see how they differ in practice.

It depends on your use case. Andromeda Alpha and Mercury 2.5 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.

Andromeda Alpha costs $0/M input tokens and Mercury 2.5 costs $0.04/M input tokens. Andromeda 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 Andromeda Alpha and Mercury 2.5 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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