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  5. Andromeda AlphavsMercury 2.5 Preview
Updated Aug 2026

Andromeda AlphavsMercury 2.5 Preview

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

Andromeda Alpha and Mercury 2.5 Preview compared across 30 shared prompts
SpecAndromeda AlphaMercury 2.5 Preview
Input priceFree$0.04/M tokens
Output priceFree$0.15/M tokens
Context window128K tokens260K tokens
Free API (OpenRouter)NoNo
ReleasedOct 2025Aug 2026
Our Verdict
Mercury 2.5 Preview
Mercury 2.5 Preview
Andromeda Alpha
Andromeda AlphaRunner-up

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

Too close to call
API pricing

Cost per 1M tokens

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

1 host

Andromeda Alpha

No hosts listed on OpenRouter.

Mercury 2.5 Preview1 host
HostInOutContextUptime
Inception$0.04 in·$0.15 out·260k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.

Writing DNA

Style Comparison

Similarity
44%

Andromeda Alpha uses 41.1x more emoji

Andromeda Alpha
Mercury 2.5 Preview
65%Vocabulary65%
15wSentence Length14w
0.64Hedging0.44
7.8Bold4.9
4.2Lists3.3
0.41Emoji0.00
0.80Headings0.79
0.12Transitions0.20
Based on 13 + 26 text responses
Research

What we learned reading every model

FAQ

Common questions

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