You're right about the 2023 JSON mode, but our project required enforcing a much more complex DSL grammar (look in Appendix for details), not just ensuring a *valid JSON object*. The newer structured output APIs are a significant improvement, but the earlier tools weren't a fit for the specific constraints we were working under at the time.

> What are you talking about?

Please edit out swipes like this from your HN comments—this is in the site guidelines: https://news.ycombinator.com/newsguidelines.html. It comes across as aggressive, and we want curious conversation here.

Your comment would be fine without that bit.