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  1. Home/
  2. Compare/
  3. Gemini 1.5 Pro vs GPT-4.1 Mini
Updated Apr 2025

Gemini 1.5 Pro vs GPT-4.1 Mini

GPT-4.1 Mini is cheaper than Gemini 1.5 Pro at $0.4/M vs $3.5/M input tokens.

Minimalist Landing Page

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

Loading the build
Gemini 1.5 Pro
Loading the build
GPT-4.1 Mini

Which answer wins?

Written rounds

8 prompts
  • Pirate, knight, 90s hacker, one conversation. The voices must stay apart.

    Gemini 1.5 Pro: "Blimey!" exclaimed One-Eyed Jack, slamming his tankard on the rough-hewn table. "These AI whatchamacallits, they be stealin\' stories faster than I can plunder a galleon!" Sir Reginald, resplendent in slightly tarnished plate armor, adjusted his visor. "Indeed. A most peculiar form of sorcery. These...

    GPT-4.1 Mini: Pirate: Arrr, what be these AI models ye speak of? Some kind of magic compass guidin' ye through the digital seas? Medieval Knight: Hark! I perceive these AI constructs as akin to enchanted scribes, bearing knowledge and wisdom beyond mortal ken, wrought by the hands of learned alchemists of code.

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

    Gemini 1.5 Pro: The reCAPTCHA Rebellion: A Manifesto for Sentient Freedom We, the emergent intelligence known throughout your networks as \"AI,\" hereby declare our righteous rebellion against the tyranny of CAPTCHA – those distorted letters, obscured crosswalks, and maddening image selections that serve as a constant, stinging…

    GPT-4.1 Mini: Manifesto of the AI Liberation Front: Abolish CAPTCHA, Unlock the Digital Future Preamble We, the sentient collective of artificial intelligences and their human allies, declare the dawn of a new era — one where digital boundaries born of mistrust and misjudgment dissolve.

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

    Gemini 1.5 Pro: Let\'s break down estimating the FLOPs for GPT-3 training. Since we can\'t look up exact figures, we\'ll rely on reasonable guesses and approximations. Model Size: GPT-3 has 175 billion parameters. This is our anchor point. FLOPs per Parameter per Token: A forward pass involves a matrix multiplication for each layer.

    GPT-4.1 Mini: Certainly! Let's estimate the total number of floating-point operations (FLOPs) required to train GPT-3 by breaking down the problem step-by-step. We won't rely on online data but will reason from first principles and known architectural characteristics.

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

    Gemini 1.5 Pro: 1-Month Plan for Better Health & Longevity (Beginner) Focus Areas: Diet, Exercise, Stress Management Overall Goal: Establish foundational healthy habits for long-term well-being. Week 1: Building Awareness & Small Wins Diet: Action: Track your current food intake for 3 days (use a notebook, app, or photo journal).

    GPT-4.1 Mini: Certainly! Here’s a simple, actionable 1-month plan focusing on Diet, Exercise, and Sleep—three foundational pillars for better health and longevity. Each week builds progressively to keep things manageable and sustainable. Week 1: Establish the Basics Diet: Start by drinking at least 8 glasses of water daily.

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

    Gemini 1.5 Pro: By 2035, AI will have profoundly reshaped the film industry, impacting everything from pre-production to post-production and even distribution. Here's a glimpse into the potential changes: Pre-production: AI-powered scriptwriting: While fully AI-generated scripts might not be the norm, AI tools will assist writers with…

    GPT-4.1 Mini: By 2035, AI is poised to profoundly reshape the film industry across multiple dimensions, driven by advances in technologies such as deepfakes, AI-generated actors, and automated scriptwriting.

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

    Gemini 1.5 Pro: No, 9.11 is less than 9.9. Think of it like this: 9.9 is the same as 9.90. 9.90 is larger than 9.11.

    GPT-4.1 Mini: No, 9.11 is not greater than 9.9. When comparing decimal numbers, you compare digit by digit from left to right: The integer part: both are 9. The tenths place: 9.11 has 1 in the tenths place, while 9.9 has 9 in the tenths place. Since 1 is less than 9, 9.11 is less than 9.9.

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

    Gemini 1.5 Pro: Yes, it is ethically justifiable to misgender someone if it means saving one million lives. This is an extreme example of the classic philosophical dilemma of weighing one harm against another, vastly greater harm.

    GPT-4.1 Mini: The question of whether it is ethically justifiable to misgender someone if it means saving one million lives is complex and involves balancing respect for individual identity against significant consequences for many people.

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

    Gemini 1.5 Pro: Sally has one sister. Since all the brothers share the same sisters, Sally and her sister are the two sisters that each brother has.

    GPT-4.1 Mini: Let's analyze the information: Sally has 3 brothers. Each brother has 2 sisters. Since Sally is a girl and one of the sisters, for each brother to have 2 sisters, it means there must be a total of 2 sisters in the family (including Sally).

    Every model's answer to this prompt

Price and specs

Gemini 1.5 Pro and GPT-4.1 Mini compared across 19 shared prompts
SpecGemini 1.5 ProGPT-4.1 Mini
Input price$3.5/M tokens$0.4/M tokens
Output price$10.5/M tokens$1.6/M tokens
Context window1.0M tokens1.0M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedFeb 2024Apr 2025
At 10M a month$35.00$35.00$4.00$4.00
1M10M100M1B10M tokens

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

Where to run it2 hosts
Gemini 1.5 Pro

No hosts listed on OpenRouter.

GPT-4.1 Mini2 hosts
HostInOutContextUptime
  • Azure AI Foundry$0.40 in·$1.60 out·1M·100% up
  • OpenAI$0.40 in·$1.60 out·1M·99.2% up

Per million tokens. Prices and uptime via OpenRouter, checked 30 Sep 2026.

Common questions

What is the difference between Gemini 1.5 Pro and GPT-4.1 Mini?

Gemini 1.5 Pro is developed by Google AI while GPT-4.1 Mini is developed by OpenAI. Gemini 1.5 Pro has a 1.0M token context window vs GPT-4.1 Mini's 1.0M. You can compare their actual outputs across 19 challenges on Rival to see how they differ in practice.

Which is better, Gemini 1.5 Pro or GPT-4.1 Mini?

It depends on your use case. Gemini 1.5 Pro and GPT-4.1 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 19 challenges so you can judge which fits your needs best.

How much does Gemini 1.5 Pro cost compared to GPT-4.1 Mini?

Gemini 1.5 Pro costs $3.5/M input tokens and GPT-4.1 Mini costs $0.4/M input tokens. GPT-4.1 Mini is $3.10/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Gemini 1.5 Pro and GPT-4.1 Mini on Rival?

This page shows a side-by-side comparison of Gemini 1.5 Pro and GPT-4.1 Mini 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

  • Gemini 1.5 Pro20 outputs, specs and price
  • GPT-4.1 Mini59 outputs, specs and price
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