Opus 5.5 vs GPT-6.1 Sol: miniature cyberpunk city

Create an interactive miniature cyberpunk city diorama in Three.js.
The result should feel stylish, neon-lit, dense, alive, and premium.
The first few seconds must have a strong wow effect and immediately hook the viewer.
Core idea:
Build a small cyberpunk city on a compact platform or floating base, packed with neon buildings, animated signs, traffic, lights, rain, and futuristic atmosphere.
Main requirements:
Build everything from scratch in code
No pre-made 3D models
Use Three.js
Prefer a single HTML file unless a few small extra files are truly necessary
The project must run locally in the browser
The city should include:
small but dense building cluster
neon signage
animated windows
glowing streets
moving vehicles or floating traffic
rain or atmospheric particles
reflections if possible
hologram-style elements if they fit well
Interaction ideas:
orbit camera
day/night is optional, but night is preferred
power on / power off mode
rain on / off
auto camera tour
zoom in to explore details
Important visual moment:
The start should feel very strong.
For example, begin in darkness, then power surges through the city and neon signs flicker on one by one, making the whole miniature city come alive.
Make the city feel alive and cinematic, with lots of tiny details for the viewer to discover.
Optional polish:
tiny rooftop details
animated billboards
subtle fog
moving trains, drones, or hovercars
little ambient storytelling touches