After visiting Denmark twice this year I wanted to visualize how different their land use is compared to The Netherlands. Turns out it's pretty similar, but less urban area and more forests.

onsland.koenvangilst.nl?country=denm...

Just added Medusa by Caravaggio. Once again GPT-5 seems to offer the most creative interpretations. Maybe they've been doing some finetuning on SVG generation?

The website also comes with a workshop feature which lets me explore new artworks and/or regenerate existing ones if they fail. It gets a list of models from OpenRouter and shows the costs per output token.

Anyone with an OpenRouter API key can start the project locally and use the workshop.

The gallery has some interesting reinterpretations of famous art. For instance, here's how GPT-5 interprets The Scream by Edward Munch. I love how the colored horizontal stripes go outside the boundaries of the painting.

Just released an update to my UN speeches side project.

Added speech similarity analysis using embeddings. The heatmap highlights countries with semantically similar speeches (darker = more similar). Click a country to see details.

un.koenvangilst.nl/analysis

I just got back from a lovely week at Normandy's coast. The cliffs there are stunning and capture light in remarkable ways. I'm trying to get back into photography after a long pause and have created a dedicated space for my photos on my website.​​​​​​​​​​​​​​​​

koenvangilst.nl/photography

To test out Google's new Gemini 2.5 Pro model I asked it to build my Shepherd's Dog game. Not bad, but Claude 3.7 still offers the best one-shot result.

Play it here: vnglst.github.io/when-ai-fail...

See the rest: github.com/vnglst/when-...

Choose Life.

choose-life.koenvangilst.nl

Inspired by Trainspotting and @ginatrapani.org's Truisms.

o3-mini's version has much better game mechanics and is more fun to play. But it misses a lot of the features.

html-preview.github.io?url=https://...

Shepherd's Dog is a game I've wanted to create for a long time, but I never got the sheep flocking behaviour right. The goal of the game is to herd all the sheep into the pen before nightfall.

Now, I've asked several models to create this game and I'm impressed with what Claude 3.7 come up with.

I recently read Ian Kershaw’s biography of Hitler. This passage, where he bullies the Czechoslovak president into a “peace deal,” stood out. After what happened in the Oval Office today, it feels disturbingly relevant. But I’m also glad Zelensky is nothing like Hácha.

Can LLMs play the card game Set?

While the traditional models struggled, the reasoning models performed surprisingly well.

github.com/vnglst/when-...

New update for the UN speeches project: I made the interaction clearer by adding hover effects and borders.

The project tries to simplify the UN speech content as much as possible to see who's talking about whom in either an optimistic or pessimistic way.

un-speeches.koenvangilst.nl

Something I've been working on using GenAI: A visualization of how world leaders talk about each other during UN speeches. Select a country on the globe to explore diplomatic relationships and see who's saying what about whom.

un-speeches.koenvangilst.nl

“Time flies”

New visualization made with JavaScript.

See it here: time-flies.koenvangilst.nl
Source code: github.com/vnglst/time-...

This coding session was dedicated to recreating Jeffery Ventrella's "Particle Life". As you can imagine, I had a lot of fun with it. So strange that I've never encountered this algorithm before!

Demo: particle-life.koenvangilst.nl

Source code: github.com/vnglst/parti...

Purple rain

purple-rain.koenvangilst.nl

I’m new to Bluesky and don’t know anyone here yet. Posting my most successful thing from Twitter to change that!

I created this two weeks ago as a weekend project. It’s called Pong Wars and it’s about the eternal battle between day and night.

pong-wars.koenvangilst.nl