Sengi.

The Sengi Journal

Customer stories, practical AI projects and notes from workshops and events. See what the work involves, how the systems fit together and what we learn along the way.

ChatGPT: which model? October 2026. Johannes Gontrum compares Luna, Terra, Sol and Astra.
Getting started

Which ChatGPT model should you use? Sol 6.1 vs Astra in October 2026

My practical guide to choosing a ChatGPT model, managing usage limits and finding a daily driver: Sol 6.1 on Plus, and Astra Light for my own work.

Healthcare + AI? Can healthcare keep up? Johannes Gontrum and Karolinska in Stockholm.
In practice

AI in healthcare: a reality check at Karolinska

Regulation, virtual patients and practising difficult conversations. What stuck with me after an AI event at Karolinska in Stockholm.

Does prompting still matter? Johannes Gontrum explains how to use ChatGPT in 2026.
Getting started

Does prompting still matter in 2026?

How I approach better ChatGPT answers: clear instructions, the right context and model, and a practical way to organise your chats.

Johannes Gontrum and Daniel Hesse leading a practical AI workshop at Uppsala Business Park.
Workshop & event

UBP Sessions: Turning everyday tasks into reusable AI workflows

At our first UBP Session, participants brought tasks from their own working day. We worked through them together, explored what AI could help with and turned useful approaches into reusable skills. Most of the session was hands-on, with individual guidance and no coding required.