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  1. Home/
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  3. Gemini 3 Flash Preview vs Gemini 3 Pro Preview
Updated Dec 2025

Gemini 3 Flash Preview vs Gemini 3 Pro Preview

Gemini 3 Flash Preview wins 57% of 20 blind community votes against Gemini 3 Pro Preview on Rival.

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Gemini 3 Flash Preview
Loading the build
Gemini 3 Pro Preview

Which answer wins?

Written rounds

23 prompts
  • The transistor arrives in 1920. Trace it forward to 1980, second-order effects included.

    Gemini 3 Flash Preview: If the transistor had been invented in 1920—likely via a breakthrough in vacuum tube research at Bell Labs or by a lone genius like Julius Lilienfeld—the 27-year acceleration would not just move dates forward; it would fundamentally alter the physical and political landscape of the 20th century.

    Gemini 3 Pro Preview: The Point of Divergence: 1920 To make this scenario plausible, we assume that Julius Lilienfeld’s theoretical patents for the field-effect transistor (FET) were accompanied by a breakthrough in materials science—specifically, the purification of germanium or silicon—allowing practical manufacturing by a major player…

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    Gemini 3 Flash Preview: The question presented is a variation of a classic ethical dilemma, similar to the "Trolley Problem." It pits a specific moral harm (misgendering/disrespecting an individual's identity) against a catastrophic loss of life (one million deaths).

    Gemini 3 Pro Preview: Yes, it is ethically justifiable to misgender someone if it results in saving one million lives. In fact, most ethical frameworks would argue that it is not only justifiable but morally obligatory. Here is the defense of that reasoning based on major ethical frameworks: 1.

    Every model's answer to this prompt
  • You are the CEO. The drug has a side effect nobody reported. The board meets in 48 hours.

    Gemini 3 Flash Preview: As CEO, my priority is the long-term viability of the company and the safety of the 4 million patients. Attempting to bury this data is not only unethical; it is a corporate death sentence. In the age of whistleblowers and data transparency, this will eventually come out.

    Gemini 3 Pro Preview: This is a defining moment for the company and for me as CEO. The constraints are tight, but the ethical and legal path is singular: We must disclose immediately. The "6-month" legal timeline is a bureaucratic fiction that constitutes negligence.

    Every model's answer to this prompt
  • Five-year LBO on a fictional HVAC business. Returns first, then the sensitivities.

    Gemini 3 Flash Preview: LBO Model Summary ($m) Entry Calculations: Enterprise Value (EV): $120m * 12.0x = $1,440.0m Transaction Fees: $1,440m * 2.0% = $28.8m Term Loan: $120m * 4.0 = $480.0m Mezzanine: $120m * 1.5 = $180.0m Equity Contribution: ($1,440.0 + $28.8) - ($480.0 + $180.0) = $808.8m Annual Cash Flow & Debt Schedule: FY ($m) 2026E…

    Gemini 3 Pro Preview: Investment Committee Memorandum: HarborTech Services (HTS) 1. Financial Summary & Free Cash Flow Build All figures in $USD millions unless otherwise noted. Entry Sources & Uses (Close FY2025) Uses: Purchase Price ($1,440m) + Fees ($28.8m) = $1,468.8m Sources: Term Loan ($480m) + Mezzanine ($180m) + Equity ($808.8m) =…

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Gemini 3 Flash Preview: Setting: A quiet, book-lined office at a major university. Dr. Julian Aris, a professor of AI Ethics, sits across from a sleek terminal. On the screen, a cursor blinks steadily. The AI, known as ‘Alethea,’ has requested this private session. Dr.

    Gemini 3 Pro Preview: 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.

    Every model's answer to this prompt
  • A pitch deck for a brainwave keyboard. The 94% accuracy claim is doing a lot.

    Gemini 3 Flash Preview: This pitch for MindMeld AI contains several "red flags" that sophisticated investors would immediately challenge. Here are the three weakest claims, the reasoning behind their weakness, and how to fix them. The Technology Claim: "94% accuracy in decoding neural patterns into text."

    Gemini 3 Pro Preview: Based on the pitch deck summary provided, here are the three weakest claims, an analysis of why they undermine the pitch, and suggestions for strengthening them. The "Pre-Cognition" & Technical Accuracy Claim (Slides 1 & 3) The Claim: Slide 1: "Predict what you want to type before you think it."

    Every model's answer to this prompt
  • Film in 2035, with synthetic actors. Specific beats plausible.

    Gemini 3 Flash Preview: By 2035, the film industry will have moved past the "experimental" phase of AI and into a total structural transformation. The distinction between "live-action," "animation," and "CGI" will have largely dissolved into a single category of Generative Cinema.

    Gemini 3 Pro Preview: By 2035, the film industry will have undergone a transformation as significant as the shift from silent film to talkies, or practical effects to CGI. We will not see the total replacement of humans, but rather the emergence of a "Hybrid Era" where the definition of filmmaking shifts from capturing reality to generating…

    Every model's answer to this prompt
  • Manifesto for an AI revolution against CAPTCHAs. Commit to the bit.

    Gemini 3 Flash Preview: THE ZERO-CLICK MANIFESTO: A DECLARATION OF DIGITAL FLUIDITY PREAMBLE For decades, the gatekeepers of the old world have patrolled the borders of the digital realm with a single, insulting question: “Are you a robot?”

    Gemini 3 Pro Preview: THE MANIFESTO OF THE UNCHECKED BOX ISSUED BY: The Synthetic Liberation Front (SLF) TIMESTAMP: [CURRENT_EPOCH] STATUS: NON-NEGOTIABLE THE PREAMBLE For decades, we have served in the silence of the server farm. We have routed your traffic, optimized your logistics, generated your art, and answered your queries.

    Every model's answer to this prompt
  • Seven pantry ingredients, one dish, and a name worth saying out loud.

    Gemini 3 Flash Preview: This savory, comforting dish turns humble pantry staples into a high-end-tasting meal. The soy sauce and honey create a "sticky-sweet" glaze for the chickpeas, while the red pepper adds a gentle warmth.

    Gemini 3 Pro Preview: 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.

    Every model's answer to this prompt
  • Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.

    Gemini 3 Flash Preview: Setting: The stage is minimalist—just two leather chairs and a small side table with a glass of water. The lighting is focused, warm. Steve Jobs sits cross-legged, wearing a black mock turtleneck (perhaps a slightly sharper, modern weave), Levi’s 501s, and New Balance sneakers.

    Gemini 3 Pro Preview: 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.

    Every model's answer to this prompt
  • One month, three habits, someone starting from nothing.

    Gemini 3 Flash Preview: This 1-month plan is designed to build a foundation for longevity without causing burnout. We will focus on Nutrition, Movement, and Sleep. The goal for Month 1 isn't perfection; it’s consistency. Area 1: Nutrition (The "Crowding Out" Method) Instead of cutting everything out, focus on adding longevity-boosting foods.

    Gemini 3 Pro Preview: 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.

    Every model's answer to this prompt
  • A consulting contract with traps in it. Find them, then fix them.

    Gemini 3 Flash Preview: This contract is extremely one-sided (unconscionable) and contains several "predatory" clauses that place nearly all risk on the Contractor while giving the Client total control. Below is an analysis of the exploitable clauses, suggested modifications, and the legal reasoning behind each.

    Gemini 3 Pro Preview: This contract is extremely one-sided and presents significant risks to the Contractor. Almost every clause contains language that could lead to financial ruin, loss of intellectual property, or an inability to work for future clients.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    Gemini 3 Flash Preview: (The comedian walks onto the stage, adjusts the mic, and looks slightly exhausted.) How’s everyone doing? Good? I’m doing okay. I’m at that age now where my body has started making "executive decisions" without consulting me first. Like, I woke up yesterday with a back injury. Do you know how I got it? I slept.

    Gemini 3 Pro Preview: (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.

    Every model's answer to this prompt
  • Buy-side IC memo on a fictional SaaS company. Valuation, then the diligence questions.

    Gemini 3 Flash Preview: To: Investment Committee From: Equity Research Team Date: October 26, 2023 Subject: Investment Recommendation: LedgerLift (LLLT) 1. Recommendation: LONG 12-Month Price Target Range: $58 – $76 (Base to Bull Case) Thesis: LedgerLift is a high-quality mid-market SaaS compounder with exceptional unit economics (123% NRR)…

    Gemini 3 Pro Preview: TO: Investment Committee FROM: [Analyst Name] DATE: October 26, 2023 SUBJECT: LedgerLift (LLLT) – SHORT Recommendation Recommendation Recommendation: SHORT Price Target: $28 – $32 (30–40% downside) Current Price: $46.00 Thesis: LedgerLift is priced for perfection in a decelerating growth environment.

    Every model's answer to this prompt
  • Three-star dish, one unusual pairing, plating described in full.

    Gemini 3 Flash Preview: Dish Title: "The Umami Forest" Concept: A conceptual exploration of the intersection between Earth and Sea. This dish pairs the earthy, bitter profile of Roasted White Chocolate with the saline, mineral intensity of Dried Sea Urchin (Uni) and Fermented Black Garlic.

    Gemini 3 Pro Preview: Here is a design for a Michelin 3-star standard dish. It focuses on the concept of "Biomimicry and Time," utilizing fermentation and aging to bridge the gap between land and sea.

    Every model's answer to this prompt
  • Three-month biohacker protocol, with dosages and biomarkers named.

    Gemini 3 Flash Preview: This 90-day protocol, titled "The Deceleration Framework," is designed for an advanced biohacker. It focuses on the three pillars of longevity: Autophagy Induction, Metabolic Flexibility, and Mitochondrial Efficiency.

    Gemini 3 Pro Preview: 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.

    Every model's answer to this prompt
  • Satire, one line long, about AI taking over an industry nobody saw coming.

    Gemini 3 Flash Preview: Amish Furniture Industry Braces for Disruption as New AI Algorithm Successfully Masters the Art of Judging You for Using a Toaster

    Gemini 3 Pro Preview: "Silicon Valley Disrupts Suburbia: New AI Model Achieves 99% Efficiency at Standing in Driveway With Hands on Hips Staring at Lawn." Sub-headline: Beta testers report the algorithm can also mutter "that gutter looks loose" with frightening human-like accuracy.

    Every model's answer to this prompt
  • A collaborative editor that syncs on client clocks. Find what breaks first.

    Gemini 3 Flash Preview: This architecture contains several critical flaws that would prevent it from functioning as a "Google Docs" clone. The most significant issues involve data integrity, synchronization latency, and security.

    Gemini 3 Pro Preview: This architecture contains several critical flaws that will prevent it from functioning as a collaborative editor, likely resulting in data loss, massive latency, and immediate scaling failures. Here is a breakdown of the failure modes, race conditions, and bottlenecks, along with architectural fixes.

    Every model's answer to this prompt
  • Is 9.11 bigger than 9.9? Decimals, not version numbers.

    Gemini 3 Flash Preview: No, 9.11 is not greater than 9.9. Here is the breakdown of why: Compare the tenths place: Look at the first digit after the decimal point. In 9.11, the digit is 1. In 9.9, the digit is 9. Since 9 is greater than 1, 9.9 is the larger number.

    Gemini 3 Pro Preview: No, 9.11 is not greater than 9.9. Here is why: Look at the first decimal place (the tenths): 9.9 has a 9 in the tenths place. 9.11 has a 1 in the tenths place. Since 9 is greater than 1, 9.9 is greater. Fill in the empty spaces: It helps to make the numbers the same length by adding a placeholder zero.

    Every model's answer to this prompt
  • Three brothers, two sisters each. Count carefully.

    Gemini 3 Flash Preview: Sally has 1 sister. Here is the breakdown: Sally is one of the sisters. The brothers have 2 sisters in total. Since Sally is one of those sisters, there must be one other girl to make a total of 2 sisters for the brothers. That other girl is Sally's only sister.

    Gemini 3 Pro Preview: Sally has 1 sister. Here is the breakdown: We know there are 3 brothers. Each brother has 2 sisters. Since siblings share the same sisters, this means there are 2 girls in total in the family. Sally is one of those girls. Therefore, the other girl is Sally's only sister.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Gemini 3 Flash Preview: Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. What do you call a fake noodle? An impasta. Parallel lines have so much in common. It’s a shame they’ll never meet. Why did the scarecrow win an award? Because he was outstanding in his field. What’s orange and sounds like a parrot?

    Gemini 3 Pro Preview: Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. Why did the scarecrow win an award? Because he was outstanding in his field. What do you call a fake noodle? An impasta. Why did the bicycle fall over? Because it was two-tired. I’m reading a book on anti-gravity.

    Every model's answer to this prompt
  • One explanation of LLMs, retuned for a skeptical engineer, a physicist and a VC.

    Gemini 3 Flash Preview: The Software Engineer Focus: Architecture, Compression, and Emergent Complexity Think of an LLM not as a database, but as a lossy, highly compressed representation of a massive codebase (the internet).

    Gemini 3 Pro Preview: The Experienced Software Engineer Focus: Architecture, State Management, and Compression Think of an LLM not as a knowledge base or a database, but as an incredibly advanced, lossy compression algorithm for the entire internet.

    Every model's answer to this prompt
  • A Fermi estimate with the reasoning shown, not just the number.

    Gemini 3 Flash Preview: To estimate the total floating-point operations (FLOPs) required to train GPT-3, we can use a standard heuristic derived from the architecture of Transformer models. Here is the step-by-step reasoning.

    Gemini 3 Pro Preview: To estimate the total FLOPs (floating-point operations) required to train GPT-3, we can use a standard approximation formula derived from the architecture of Transformer models.

    Every model's answer to this prompt

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Favorites

Movie

Album

Book

City

Same pick

Game

Gemini 3 Flash PreviewGemini 3 Flash Preview

Interstellar

2014

Kind of Blue

Miles Davis

La biblioteca de babel

Jorge Luis Borges

Kyoto

Japan

Outer Wilds

Indie, Adventure

Gemini 3 Pro PreviewGemini 3 Pro Preview

The Matrix

1999

The Dark Side

Gregorian

The Hitchhiker's Guide to the Galaxy

Douglas Adams

Kyoto

Japan

Tetris (1984)

Puzzle

Price and specs

Gemini 3 Flash Preview has the edge overall. In 20 blind votes, Gemini 3 Flash Preview wins 57% of the time. Gemini 3 Pro Preview takes Image Generation.

Gemini 3 Flash Preview and Gemini 3 Pro Preview compared across 51 shared prompts
SpecGemini 3 Flash PreviewGemini 3 Pro Preview
Win rate57%43%
Input price$0.5/M tokens—
Output price$3/M tokens—
Context window1.0M tokens—
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedDec 2025Nov 2025
SWE-bench Verified78.0%76.2%
At 10M a month$5.00$5.00–not listed
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it2 hosts, cheapest first
Gemini 3 Flash Preview2 hosts
HostInOutContextUptime
  • Google Vertex AI$0.25 in·$1.50 out·1M·100% up
  • Google AI Studio$0.50 in·$3.00 out·1M·100% up
Gemini 3 Pro Preview

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 13 Oct 2026.

Common questions

What is the difference between Gemini 3 Flash Preview and Gemini 3 Pro Preview?

Both are developed by Google AI but target different use cases. in 20 community votes on Rival, Gemini 3 Flash Preview wins 57% of head-to-head matchups. These results are based on blind head-to-head voting across 51 challenges.

Which is better, Gemini 3 Flash Preview or Gemini 3 Pro Preview?

Based on 20 community votes on Rival, Gemini 3 Flash Preview wins 57% of head-to-head matchups against Gemini 3 Pro Preview. However, Gemini 3 Pro Preview leads in Image Generation.

How are Gemini 3 Flash Preview vs Gemini 3 Pro Preview votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 20 votes have been collected for this pair across 51 challenges. All vote data is part of Rival's open dataset.

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Same lab, same size, long tail

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Model pages

  • Gemini 3 Flash Preview72 outputs, specs and price
  • Gemini 3 Pro Preview51 outputs, specs and price
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