A notebook by Caleb Tutty Updated JUN 2026
Jakarta — —:—— caleb-tutty.com
Featured · LLMs

“A deceptively simple question”: the tells of an AI-written lecture

Twelve machine-voiced economics lessons open with the exact same four words. A phrase-by-phrase audit of the template — with the audio to prove it.

By Caleb Tutty Jun 3, 2026 10 min read Read the story →
FIG. 01 · 223 VOICEOVER SCRIPTS SOURCE: COURSE PIPELINE

Maps & Geospatial 1

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GEO · BPS Jun 3

Nine BPS indicators, one grid of choropleths

An exploratory catalogue of what the Indonesian census agency publishes — nine social and economic indicators mapped across all of Indonesia, with a Jakarta-metro close-up at regency grain.

D3 Experiments 1

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LLMs, in practice 1

All LLM notes →
Caleb Tutty
About the author

Caleb Tutty

A Kiwi engineer, AI consultant and former data journalist based in Jakarta. By day I help teams design, build and ship AI products. By night — and the occasional gridlocked taxi ride — I hunt for patterns in data.

I came to this from an unconventional path. Starting as a software dev, I then worked as a data journalist at the New Zealand Herald where we won Canon Media Awards for innovation in storytelling — including an investigation that traced KiwiSaver retirement funds to stakes in cluster‑munitions, nuclear‑weapons and tobacco makers, and helped push the industry toward responsible investment. From there I became Westpac’s first data‑science hire in New Zealand, then served as CTO of two startups: Nucon, a construction‑tech AI company in Singapore, and Eskwelabs, a data‑science school in Manila.

This is where I publish the things that don’t fit anywhere else: bespoke D3 experiments, scroll-through stories about Southeast Asian cities, lessons learned shipping LLM features, and the occasional frustrated DevOps note. I’m also open-sourcing a selection of tutorials and workshops — helping give back.

Connect with me on LinkedIn.

D3.js d3-geo TopoJSON PostGIS React SvelteKit Python Mapbox GL Kubernetes