Phil LopezAI systems, game dev, and future tech.
A reconstructed screenshot representing the Character Chat interface.
CodeAtomicPausedCity

Character Chat

An intuitive ChatGPT interface for talking with fictional and historical characters.

A coastal observatory city representing Character Chat.
A harbor city for persona design, chat UX, and user-facing AI play.
Importance
76/100
Founding Year
2023
Region
Southern Shoals
Terrain
Coast
Prestige
7
Activity
6
Stability
5
Reach
6

Overview

Character Chat appears in Phil's resume as one of his early OpenAI-driven web products. It focuses less on infrastructure than on interaction design, prompt experience, and making AI chat feel immediately playful and understandable.

Even without a current public repo, it is an important city in the portfolio because it shows Phil's pattern of shipping user-facing AI experiences early.

Buildings

  • Turned ChatGPT into a quicker, more approachable character-based experience.
  • Showed early product instinct around consumer-facing AI UX.
  • Balanced novelty with a simple interaction model.

Production Queue

  • Revisit persona systems with newer model capabilities.
  • Rebuild the interaction layer with better memory and controls.

Tech Tree

  • OpenAI APIs
  • Chat UX
  • Prompt design
  • Web apps

Diplomacy

  • Curious users
  • AI tinkerers
  • Prompt explorers

Trade Routes

  • Character personas
  • Prompt patterns
  • Conversation flows

Wonders

  • Playful AI interface design

Great Works

Landmark
Persona Harbor
A fast, approachable interface for talking with fictional and historical characters.

Civilopedia Entry

Facet Type
Code
Role
Founder and primary engineer
Stack
JavaScript, OpenAI APIs, Web UI
Features
Character-based chat experiences, Accessible AI interface design, Fast persona switching
Integrations
OpenAI
Architecture Notes
Designed as a user-facing AI product rather than a backend-first experiment., Prioritized approachability and novelty.