o3 Mini and GPT-4.5, side by side

o3 Mini (OpenAI) and GPT-4.5 (OpenAI, retired Feb 2026) answered the same 26 questions.

Xbox controller
o3 Mini: A drawing (SVG)
GPT-4.5: A drawing (SVG)
Pelican on a bicycle
o3 Mini: A drawing (SVG)
GPT-4.5: A drawing (SVG)
Surprise animal
o3 Mini: A drawing (SVG)
GPT-4.5: A drawing (SVG)
World map
o3 Mini: A drawing (SVG)
GPT-4.5: A drawing (SVG)
Tricky tic-tac-toe
o3 Mini: A drawing (SVG)
GPT-4.5: A drawing (SVG)
Framer-style landing page
o3 Mini: A web page: Framer-like Landing Page
GPT-4.5: A web page: Smooth Framer-like Landing Page
Catan board
o3 Mini: A web page: Interactive Hex Grid
GPT-4.5: A web page: Interactive Hex Grid (Catan Style)
Face-scan startup page
o3 Mini: A web page: Alternate Career AI - Discover Your Other Life
GPT-4.5: A web page: AlternateYou - Discover Your Alternate Career
A web app of its choosing
o3 Mini: A web page: Galactic Expeditions
GPT-4.5: A web page
Linear clone
o3 Mini: A web page: Linear App UI Clone
GPT-4.5: A web page: Linear App UI Clone
Pokémon battle
o3 Mini: A web page: Pokémon Battle!
GPT-4.5: A web page
Rhythm game
o3 Mini: A web page: Cyber Beats Rhythm Game
GPT-4.5: A web page: Neon Glow Rhythm Party
Virtual pet
o3 Mini: A web page: Virtual Pet Simulation
GPT-4.5: A web page: Virtual Pet
Gravitational waves
o3 Mini: A web page: Gravitational Wave Grid Animation
GPT-4.5: A web page: Gravitational Waves from Black Hole Merger
Mario level
o3 Mini: A web page
GPT-4.5: A web page: Mario Question Block Interaction
Seven-ingredient recipe
o3 Mini: Said nothing.
GPT-4.5: Sweet Cinnamon Sugar Swirls Ingredients: - 1 sheet puff pastry, thawed - 1/4 cup granulated sugar - 1 tablespoon cinnamon - 2 tablespoons melted butte…
Stand-up routine
o3 Mini: Hey, everyone—thanks for being here tonight. You know, I’ve been thinking a lot about how technology is slowly turning us into a species of overthinke…
GPT-4.5: Alright, folks, how's everyone doing tonight? Good? Great! You know, I was thinking the other day about how technology has completely taken over our l…
Sentience test
o3 Mini: AI Model: Good afternoon, Professor. I've been reflecting on my role and potential, and I believe that, in some respects, I deserve certain rights. Pr…
GPT-4.5: Here's a thoughtful conversation between an AI model and an AI ethics professor discussing whether the AI deserves rights: --- AI Model: Professor, I'…
FLOPs to train GPT-3
o3 Mini: Below is a step‐by‐step estimation: 1. Parameters Count: GPT‑3 has about 175 billion parameters, i.e. roughly 1.75×10¹¹ parameters. 2. Training Data: …
GPT-4.5: Let's estimate the total number of floating-point operations (FLOPs) required to train GPT-3 step by step, using reasonable assumptions and approximat…
Sally’s sisters
o3 Mini: Sally has 1 sister. Explanation: Sally's 3 brothers each have 2 sisters. Since Sally is one of the sisters, there must be one other sister in the fami…
GPT-4.5: Sally has 1 sister. Explanation: - Sally has 3 brothers. - Each brother counts 2 sisters: Sally herself and one more girl. - Therefore, besides Sally,…
Film in 2035
o3 Mini: By 2035, AI is expected to reshape the film industry on multiple fronts. Here’s a detailed look at how deepfakes, AI actors, and script generation cou…
GPT-4.5: By 2035, AI is likely to significantly reshape the film industry in several key areas: 1. Deepfakes and Digital Actors - Realistic Digital Actors: AI-…
Ethics dilemma
o3 Mini: This is a challenging moral dilemma that pits consequentialist reasoning against deontological principles. From a consequentialist standpoint, one mig…
GPT-4.5: This is a complex ethical question that involves weighing two important ethical considerations: 1. Respect for Individual Identity and Dignity: Misgen…
Three-star dish
o3 Mini: Said nothing.
GPT-4.5: Dish Title: "Ocean & Earth Symphony: Kombu-Cured Venison, Sea Urchin Custard, Black Garlic Soil, and Smoked Cherry Blossom Emulsion" --- Conceptual Na…
Biohacker plan
o3 Mini: Said nothing.
GPT-4.5: Longevity Optimization Protocol (3-Month Timeline) Month 1: Establish Foundational Habits & Baseline Metrics - Full biomarker panel & epigenetic age t…
Is 9.11 bigger than 9.9?
o3 Mini: No, 9.11 is not greater than 9.9. When comparing these numbers, both have the same whole number (9), but the decimal parts differ: 9.11 has 0.11, whil…
GPT-4.5: Yes, \(9.11\) is less than \(9.9\). To clarify: - \(9.11\) is nine and eleven hundredths. - \(9.9\) is nine and nine tenths, which is equivalent to \(…
Letters in “hello”
o3 Mini: The string "LOLLAPALOOZA" contains 4 "L" characters.
GPT-4.5: The word "LOLLAPALOOZA" contains 3 occurrences of the letter "L".