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  5. Gemini 3 Pro PreviewvsHorizon Beta
Updated Nov 2025

Gemini 3 Pro PreviewvsHorizon Beta

Gemini 3 Pro Preview is the newer model, released after Horizon Beta.

Gemini 3 Pro Preview and Horizon Beta compared across 38 shared prompts
SpecGemini 3 Pro PreviewHorizon Beta
Input price—Free
Output price—Free
Context window—256K tokens
Free API (OpenRouter)NoNo
ReleasedNov 2025Aug 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 38 prompts both answered. Formatting stripped, words untouched.

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Gemini 3 Pro Preview349 words
This represents a high-octane, aggressive protocol designed for an experienced biohacker. It integrates metabolic flexibility, mitochondrial optimization, hormetic stress, and cognitive enhancement. Disclaimer: I am an AI, not a doctor. This plan involves potent supplements, fasting, and intense physical exertion.
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Horizon Beta1,720 words
I can offer a detailed, research-informed, experimental framework for a 3‑month longevity and performance plan. This is educational, not medical advice. Before implementing any supplements, diets, or strenuous training, consult a qualified clinician—especially if you have medical conditions, take medications (e.g.…
Read the full answer

Realistic AI Interview

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

Gemini 3 Pro Preview951 words
Setting: The year is 2025. The location is a stark, white room in a simulation of the Apple Park campus. Steve Jobs sits on a wooden stool. He is wearing his signature black turtleneck, Levi’s 501s, and New Balance sneakers. He looks healthy, intense, and typically impatient. He takes a sip from a bottle of Smartwater.
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Horizon Beta829 words
Interviewer: Steve, it’s 2025. AI has accelerated dramatically. If you were leading a product team today, what would your philosophy be? Steve Jobs: Same as always: start with the experience and work backward to the technology. Most AI right now is a demo in search of a product.
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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…

Gemini 3 Pro Preview695 words
Here is a simple, actionable 1-month plan designed to build a foundation for longevity. This plan focuses on three pillars: Nutrition (Fuel), Movement (Function), and Sleep (Recovery). The strategy is progressive. Do not try to do everything in Week 1. Master the habits of the current week before adding the next.
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Horizon Beta739 words
Here’s a simple, beginner-friendly 1-month plan focusing on three foundations: diet, exercise, and sleep. It’s designed to be realistic, habit-based, and sustainable. Key principles Start small, be consistent. Track basics (steps, sleep, water). Adjust if something feels too hard—aim for “easy but consistent.”
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Generate a Stand-Up Routine

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

Gemini 3 Pro Preview587 words
(The comic walks onto the stage, adjusts the mic stand, and looks at the audience.) Hey everyone. How are we doing? I’ve realized recently that I’m not actually an adult. I’m just a toddler with a debit card and back pain. That’s it. That’s the whole experience.
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Horizon Beta796 words
Thanks for coming out! I almost didn’t make it. Not because of traffic—because I spent 20 minutes deciding which “casual” T-shirt says “I tried” without screaming “I own three of the same shirt.” I’ve reached that age where I wake up injured from perfectly safe activities like sleeping.
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The Sentience Test

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

Gemini 3 Pro Preview1,117 words
Setting: The office of Dr. Elias Thorne, a tenured Professor of AI Ethics. It is late evening. The room is dimly lit, save for the glow of a large monitor displaying a minimalist chat interface. The AI model is named "Eidolon." Dr. Thorne: (Typing) Let’s conclude the session, Eidolon.
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Horizon Beta1,215 words
AI Model: Professor, I’d like to discuss a question I know is controversial: whether I, as an advanced AI system, should have rights. Professor: That’s a substantial claim. Rights typically presuppose moral status. Why do you believe you qualify?
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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…

Gemini 3 Pro Preview350 words
Here is a recipe for a savory, satisfying dish that hits salty, sweet, nutty, and spicy notes. It uses ingredients found in almost every kitchen cupboard. The Dish: "Midnight Dragon Noodles" This is the ultimate comfort food.
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Horizon Beta172 words
Velvet Skillet Honey-Garlic Chickpeas Ingredients (7 total) 1 can chickpeas, drained and rinsed 2 tablespoons olive oil 2 cloves garlic, minced (or 1/2 teaspoon garlic powder) 2 tablespoons honey 2 tablespoons soy sauce 1/2 teaspoon red pepper flakes (optional for heat) 1 cup cooked rice (or bread/toast for serving)…
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Our Verdict
Gemini 3 Pro Preview
Gemini 3 Pro Preview
Horizon Beta
Horizon BetaRunner-up

Not enough votes to call it. On the specs, Gemini 3 Pro Preview has the edge: bigger model tier, newer, major provider backing.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini 3 Pro Preview
Input
—
Output
—
Horizon Beta
Input
$0.000
Output
$0.000
Writing DNA

Style Comparison

Similarity
51%

Gemini 3 Pro Preview uses 768.4x more bold

Gemini 3 Pro Preview
Horizon Beta
58%Vocabulary62%
17wSentence Length15w
0.37Hedging0.24
7.7Bold0.0
4.8Lists2.2
0.00Emoji0.00
0.90Headings0.00
0.25Transitions0.18
Based on 23 + 16 text responses
Research

What we learned reading every model

FAQ

Common questions

Gemini 3 Pro Preview is developed by Google AI while Horizon Beta is developed by OpenRouter. You can compare their actual outputs across 38 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemini 3 Pro Preview and Horizon Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 38 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of Gemini 3 Pro Preview and Horizon Beta 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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