Blind Earth with Clef, Clef-flash, and Jev

Henry’s How Does A Blind Model See The Earth? asks a language model, cell by cell, whether a lat/lon is over land or water, then paints the answers on an equirectangular grid. No images go in. Whatever structure appears in the map is whatever geographic prior the model already carries. This post adapts that recipe for System One decision models — Cloudflare Clef / Clef-flash and TypeSafe Jev — using a binary choice (Land vs Water) instead of free-form generation....

October 2, 2026 · 3 min