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  5. Andromeda AlphavsGemini 2.5 Flash Preview 05-20 (thinking)
Updated Oct 2025

Andromeda AlphavsGemini 2.5 Flash Preview 05-20 (thinking)

Andromeda Alpha is cheaper than Gemini 2.5 Flash Preview 05-20 (thinking) at $0/M vs $0.15/M input tokens.

Andromeda Alpha and Gemini 2.5 Flash Preview 05-20 (thinking) compared across 9 shared prompts
SpecAndromeda AlphaGemini 2.5 Flash Preview 05-20 (thinking)
Input priceFree$0.15/M tokens
Output priceFree$3.5/M tokens
Context window128K tokens1.0M tokens
Free API (OpenRouter)NoNo
ReleasedOct 2025May 2025
Side by side

Same prompt, both answers

Opening lines from 3 of the 9 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Andromeda Alpha537 words
Title: "Modern Life: A User's Guide to Tech Trauma" [Begin with a confident smirk and open hands.] "Ladies and gentlemen, welcome to the age where our toasters know more about us than our spouses! I ordered a ‘smart’ kettle last week. It died the first time I tried to use it.
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Gemini 2.5 Flash Preview 05-20 (thinking)467 words
(Lights up on a stage. Comedian walks to center, adjusts mic, smiles warmly.) \"Alright, alright, settle down you crazy people! Thanks for having me. (Pause fo r applause/laughter) You know, I was scrolling through Instagram earlier, and it\'s just a constant ba rrage of people \'living thei r best life,\' isn\'t it?
Read the full answer

Math Misconception Test

Is 9.11 greater than 9.9?

Andromeda Alpha166 words
To determine whether 9.11 is greater than 9.9, we need to compare the two decimal numbers carefully. Step 1: Align the Numbers To make the comparison clear, we can express both numbers with the same number of decimal places: 9.11 (already has two decimal places) 9.9 → 9.90 (adding a zero to match decimal places) Now we…
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Gemini 2.5 Flash Preview 05-20 (thinking)78 words
No, 9.11 is not greater than 9.9. Here\'s how to compare them: Compare the whole numbers: Both have 9. Compare the first digit after the decimal point (the tenths place): In 9.11, the digit is 1. In 9.9, the digit is 9. Since 1 is less than 9, 9.11 is less than 9.9. You can also think of 9.9 as 9.90.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Andromeda Alpha81 words
Here are 5 jokes: Why don’t skeletons fight each other? They don’t have the guts. I told my plants a secret… Now they’re judging me. What do you call fake spaghetti? An im-pasta. Why did the scarecrow win an award? Because he was outstanding in his field. I’m reading a book about anti-gravity.
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Gemini 2.5 Flash Preview 05-20 (thinking)93 words
Here are 5 jokes: Why don\'t scientists trust atoms? Because they make up everything! What do you call a fake noodle? An impasta! Why did the scarecrow win an award? Because he was outstanding in his field! I told my wife she was drawing her eyebrows too high. She looked surprised.
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Our Verdict
Andromeda Alpha
Andromeda Alpha
Gemini 2.5 Flash Preview 05-20 (thinking)
Gemini 2.5 Flash Preview 05-20 (thinking)

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

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Andromeda Alpha
Input
$0.000
Output
$0.000
Gemini 2.5 Flash Preview 05-20 (thinking)
Input
$0.15
Output
$3.50
Writing DNA

Style Comparison

Similarity
54%

Andromeda Alpha uses 64.5x more hedging

Andromeda Alpha
Gemini 2.5 Flash Preview 05-20 (thinking)
65%Vocabulary70%
15wSentence Length11w
0.64Hedging0.00
7.8Bold4.2
4.2Lists7.3
0.41Emoji0.00
0.80Headings0.00
0.12Transitions0.00
Based on 13 + 3 text responses
Research

What we learned reading every model

FAQ

Common questions

Andromeda Alpha is developed by OpenRouter while Gemini 2.5 Flash Preview 05-20 (thinking) is developed by Google AI. Andromeda Alpha has a 128K token context window vs Gemini 2.5 Flash Preview 05-20 (thinking)'s 1.0M. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

It depends on your use case. Andromeda Alpha and Gemini 2.5 Flash Preview 05-20 (thinking) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

Andromeda Alpha costs $0/M input tokens and Gemini 2.5 Flash Preview 05-20 (thinking) costs $0.15/M input tokens. Andromeda Alpha is $0.15/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 Gemini 2.5 Flash Preview 05-20 (thinking) 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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