Notes from building data systems in public.

AI made writing code cheap, but reviewing it still eats my mornings. So I built a small tool that hands the first-pass pull request review to DeepSeek for about a dollar a day.

Our four-dev team blew through Claude Code's weekly budget, so we pointed everything at DeepSeek V4 Pro instead. Twelve days and $7 later, here's how it stacks up against Opus 4.7 and Sonnet 4.6 — and why the timing matters.

An ultra-compressed prompt style that strips articles, filler, and pleasantries from Claude Code without losing technical substance. Here's what it costs, what it saves, and where it bites.