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Round 01

All builds

Four briefs that cover what developers really ask models for: a marketing site, a product UI, a simulation and a game. Each one was given, word for word, to every model.

01 · Website UI

SaaS landing page

A full marketing site for a fictional scheduling app: hero, testimonials, features, pricing with a monthly/yearly toggle, FAQ and footer. Fonts from Google Fonts allowed, nothing else from the network.

Claude Opus 5.5's saas landing pageClaude Opus 5.5
Claude Fable 5.1's saas landing pageClaude Fable 5.1
GPT-6 Astra's saas landing pageGPT-6 Astra
GPT-6.1 Sol's saas landing pageGPT-6.1 Sol
02 · Software UI

Analytics dashboard

An e-commerce admin dashboard built on one fixed dataset: KPI cards, a hand-drawn revenue chart with tooltips, channel split, top products and a sortable, filterable, paginated orders table, plus a full dark mode.

Claude Opus 5.5's analytics dashboardClaude Opus 5.5
Claude Fable 5.1's analytics dashboardClaude Fable 5.1
GPT-6 Astra's analytics dashboardGPT-6 Astra
GPT-6.1 Sol's analytics dashboardGPT-6.1 Sol
03 · Simulation

Balls in a spinning hexagon

Twenty numbered balls under gravity inside a hexagon that turns once every ten seconds. Physics written from scratch: moving-wall collisions, ball-to-ball contact, friction and visible spin. No libraries.

Claude Opus 5.5's balls in a spinning hexagonClaude Opus 5.5
Claude Fable 5.1's balls in a spinning hexagonClaude Fable 5.1
GPT-6 Astra's balls in a spinning hexagonGPT-6 Astra
GPT-6.1 Sol's balls in a spinning hexagonGPT-6.1 Sol
04 · 3D game

First-person shooter

A small browser FPS in three.js: an arena with obstacles, waves of enemies that path around cover, recoil, muzzle flash, hit feedback, HUD, start and game-over screens. Every model, texture and sound generated in code.

Claude Opus 5.5's first-person shooterClaude Opus 5.5
Claude Fable 5.1's first-person shooterClaude Fable 5.1
GPT-6 Astra's first-person shooterGPT-6 Astra
GPT-6.1 Sol's first-person shooterGPT-6.1 Sol