> I can’t get Claude to do anything even a fraction of this complexity.

I remember writing a postgresql compatible DB with Opus 4.5, that used S3 as storage and local caching to make it speedy.

Ironically, Opus 4.5 is by todays standards is antique. If you have some knowledge about Databases, it goes a long way.

But you need to do it step by step. Getting the core to work, getting a Pratt parsing going. The whole pgwire protocol ... the data format ...

Step by step ...

With todays Models, your can probably get away with using /goal and telling it to make a postgresql compatible database, while having it run a few days.

Now, making a fun database test project and having it production ready! Big difference!