Demos — 02 — ATC

Same spec. Three agents. Three products. Plus one with no spec at all.

Antigravity, Claude, and Codex were each handed the same air-traffic-control simulator spec and left to build it their own way, with no further guidance. A fourth agent, Fable, got no spec — just a short prompt naming the genre and scoring loop — as a control group. No two builds took the same approach. Compare the results below.

ATC — Antigravity

Built on Google Antigravity V2, backed by Gemini. The most complete of the three, including scripted audio cues.

Instructions Launch demo

ATC — Claude

The same spec, built by Claude. A leaner interpretation of the same brief.

Instructions Launch demo

ATC — Codex

The same spec, built by OpenAI Codex. A third take on the same requirements.

Instructions Launch demo

ATC — Fable

Given no spec, just a short prompt naming the genre and scoring loop, and left to invent the rest. Fable wrote its own instructions page unprompted.

Instructions Launch demo

These are technology previews, presented for entertainment purposes only. None of the generated code has been reviewed by a human. No warranty, support, or intellectual property claim is made.