# Opus 5.5 Creates Interactive Cities in 1h25m

> Claude Opus 5.5 generates 55 imaginative cities from Italo Calvino's Invisible Cities in 1 hour 25 minutes.
- Title: Opus 5.5 Creates Interactive Cities in 1h25m · Quesma
- Summary: Claude Opus 5.5 generates 55 imaginative cities from Italo Calvino's Invisible Cities in 1 hour 25 minutes. Claude Opus 5.5 created interactive…
- Keywords: claudius, opus, invisible cities, italo calvino, interactive visualization, three.js, ai design, prompt engineering, technology, startups, Creates, Interactive
- Source: Quesma — https://quesma.com/blog/invisible-cities-one-shot
- Author: Piotr Migdał
- Published: 2026-10-07T09:26:43+00:00
- Read time: 1 min
- Topics: claudius, opus, invisible cities, italo calvino, interactive visualization, three.js, ai design, prompt engineering, technology, startups
## Opus 5.5 Design Jump
Claude Opus 5.5 made a significant leap in AI design capabilities compared to earlier models.
## First Draft Frustration
The initial draft of the visualization had AI slop and visual overlaps that needed fixing.
## Genetic Distance Map
Claude Fable 5.1 created a visualization that worked well with data but needed hand-holding for good design.
## Opus 5.5 One-Shot Result
Opus 5.5 generated 55 cities from Italo Calv: 1 hour 25 minutes, $74 API cost.

> I asked Opus 5.5 to explain camera focus by building an interactive lens lab. Here’s what it came up with after 1 hour 26 minutes in one shot, $25.66 API cost.
## Interactive Cities Visualization
The visualization shows cities with spiral staircases, seashells, telescopes, and violins.
## Time and Cost Efficiency
Opus 5.5 used 1 hour 25 minutes with 6 subagents running in parallel, costing $74 in API tokens.
## Key takeaway

Claude Opus 5.5 created interactive visualizations of 55 cities from Italo Calvino's Invisible Cities in 1 hour 25 minutes using a single prompt.