This blog article is written in a very engaging way. It seems to be more or less a masterclass on how to keep someone's attention, although there is no meta-story making you wait for the big fulfillment at the end.
I think it is the short, punchy sections with plenty of visuals and the fact that you are telling a story the whole way through, which has a natural flow, each experiment you describe, leading to the next.
For the lmarena leaderboard to be really useful you need click the "Style Control" button so that it normalizes for LLMs that generate longer answers, etc. that, while humans may find them more stylistically pleasing, and upvote them, the answers often end up being worse. When you do that, o1 comes out on top followed by o1-preview, then Sonnet 3.5, and in fourth place Gemini Preview 1206.
Our first had a nice discussion on HN: https://blog.val.town/blog/codegen/
The other posts in the series:
- https://blog.val.town/blog/townie/
- https://blog.val.town/blog/building-a-code-writing-robot/