alt Hacker NewsI've been working on a project to build a new Postgres based database in Rust[0]. I'm four weeks in and have 93% of the Postgres test suite passing. I've found agents to have worked really well for this as I have an existing codebase that has good architecture that I can point my agents at. It's also easy to debug as I can diff what my agents are doing and what Postgres is doing.
I've had to get multiple codex accounts, but there was a brief period of time where I tried API usage to see how expensive it would be. In about an hour I spent $650 of credits. I had codex estimate how much I would be spending if I was doing pure API usage and it estimated around $10k/week.
For context Postgres is 1M lines of C code. It's looking like pgrust will come out as less lines of code than Postgres and at peak I was adding over 100k lines of code in a day. I would estimate it would take a team of 5 software engineers at least 3 years to get to where I got in a month with a couple Codex subscriptions.