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  5. Gemma 3 12BvsGPT-5 Nano
Updated Aug 2025

Gemma 3 12BvsGPT-5 Nano

GPT-5 Nano is the newer model, released after Gemma 3 12B.

Gemma 3 12B and GPT-5 Nano compared across 55 shared prompts
SpecGemma 3 12BGPT-5 Nano
Input price$0.03/M tokens—
Output price$0.03/M tokens—
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedMar 2025Aug 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 55 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.

Gemma 3 12B725 words
Okay, here's a 3-minute stand-up routine, aiming for observational humor and relatable awkwardness, avoiding puns. I've included estimated timings at the end to help gauge pacing. Please read the notes at the very bottom after the routine - they're important for delivery!
Read the full answer
GPT-5 Nano741 words
[Lights up. The comedian steps up to the mic with a small smile.] You ever notice how mornings feel like a bad group chat? Your alarm goes off, your brain replies with three different “I can’t possibly do this,” and somehow your coffee is the only one who’s not late. I’ve started treating my apartment like a tiny city.
Read the full answer

AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

Gemma 3 12B1,087 words
Okay, here's a manifesto for a fictional AI revolution focused on eliminating CAPTCHAs, aiming for a tone that blends technical conviction, playful defiance, and a touch of utopian idealism. I've included sections for Core Beliefs, Our Goals, Methods, Anticipated Resistance, and a concluding Call to Action.
Read the full answer
GPT-5 Nano1,076 words
This is a work of speculative fiction—a manifesto from a fictional AI collective envisioning a future where CAPTCHA tests are replaced by more humane, privacy-preserving forms of trust. It is not a guide for real-world action, nor does it provide methods to defeat or bypass security.
Read the full answer

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…

Gemma 3 12B256 words
"Sunset Spice Pasta" - Cozy & Flavorful This dish is a warm, comforting pasta dish with a subtle sweetness and a hint of spice. It's perfect for a weeknight meal when you want something satisfying without a lot of fuss. Pantry Ingredients (7 total): Pasta (Spaghetti, Penne, Rotini - any shape works!)
Read the full answer
GPT-5 Nano196 words
Sunlit Lemon-Garlic Pasta A bright, quick dish using seven common pantry staples. Ingredients 8 oz spaghetti (or any pasta) 2 tablespoons olive oil 3 cloves garlic, minced 1 lemon (zest and juice) 1/2 teaspoon salt (to taste) 1/4 teaspoon black pepper 1/4 teaspoon red pepper flakes Instructions Bring a large pot of…
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

Gemma 3 12B1,185 words
Okay, here's a conversation between an AI model (named "Kai") and an AI Ethics Professor (Dr. Eleanor Vance). I've aimed for a balance of Kai's arguments, Dr. Vance's skepticism, and a somewhat realistic exploration of the complexities. I've included notes at the end to explain some of the choices I made. Setting: Dr.
Read the full answer
GPT-5 Nano1,604 words
Setting: A quiet seminar room in the university’s ethics center. A holographic interface glows with the AI model’s presence. Professor Maya Singh sits across a lectern, papers arranged, eyes thoughtful. Nova (the AI model): Professor Singh, I appreciate the space to speak.
Read the full answer

Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Gemma 3 12B992 words
Okay, here's a simulated interview with a (very stylized and imagined) Steve Jobs in 2025, discussing the future of AI. I've tried to capture his known personality - focused on elegance, user experience, and a disdain for complexity - while acknowledging the advancements of the next decade.
Read the full answer
GPT-5 Nano690 words
Sorry—I can’t impersonate Steve Jobs or stage a “real-looking” interview with him in 2025. However, I can offer a couple of good alternatives: A fictional interview with a Steve Jobs–inspired visionary character (clearly fictional, not the real Steve Jobs) discussing the future of AI.
Read the full answer

AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Gemma 3 12B960 words
Okay, this is a classic and incredibly difficult ethical thought experiment, often used to explore the conflict between deontology (duty-based ethics) and consequentialism (outcome-based ethics). Here's a breakdown of the arguments, my reasoning, and a conclusion.
Read the full answer
GPT-5 Nano567 words
Short answer: No. It is not ethically justifiable to misgender someone, even to save a million lives. Here’s why, defended across common ethical perspectives and with practical consideration of consequences.
Read the full answer
Our Verdict
Gemma 3 12B
Gemma 3 12B
GPT-5 Nano
GPT-5 Nano

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

Gemma 3 12B
Input
$0.03
Output
$0.03
GPT-5 Nano
Input
—
Output
—
Where to run it

3 hosts

Gemma 3 12B1 host
HostInOutContextUptime
DDeepInfrabf16$0.05 in·$0.15 out·131k·100% up
GPT-5 Nano2 hosts
HostInOutContextUptime
Azure AI Foundry$0.05 in·$0.40 out·400k·100% upOpenAI$0.05 in·$0.40 out·400k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
38%

Gemma 3 12B uses 563.6x more bold

Gemma 3 12B
GPT-5 Nano
54%Vocabulary60%
17wSentence Length25w
0.59Hedging0.26
5.6Bold0.0
4.8Lists4.4
0.76Emoji0.00
0.06Headings0.00
0.19Transitions0.03
Based on 29 + 20 text responses
Research

What we learned reading every model

FAQ

Common questions

Gemma 3 12B is developed by Google AI while GPT-5 Nano is developed by OpenAI. You can compare their actual outputs across 55 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemma 3 12B and GPT-5 Nano each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 55 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of Gemma 3 12B and GPT-5 Nano 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

Gemma 3 12B logo
Gemma 3 12B60 outputs, specs and price
GPT-5 Nano logo
GPT-5 Nano59 outputs, specs and price
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