I’ve been using Typst pretty heavily for the past few months after a few years of LaTeX, and I’ve had a similar experience. I do really love Typst though. It feels nimble, pleasant to work with and like a huge improvement over LaTeX in a lot of ways.

That said, LLMs have been noticeably better with LaTeX than with Typst for me. Typst works fine for the basics: loops, functions, small layout tweaks and that kind of thing. The problems mostly show up with more niche features.

What helped me was pointing the LLM to the current Typst docs, either the website or as they mention in their blog about the new update they also have a PDF export of the docs now (https://github.com/typst/typst/releases/download/v0.15.0/typ...). The docs are very good, and I suspect older training data plus Typst’s breaking changes are part of the problem.

One downside is that because I started using Typst with LLMs right away, I got a big head start but never became fully fluent in the language. I still find myself going back to the docs, the internet or an LLM more often than I’d like.