
When regression tests are lacking but upgrades can't wait, let AI do the heavy lifting while you focus on other work
Oof, our regression tests are not good for that part of the product.
But we really need to upgrade, the risk of being out of date is starting to outweigh everything else.
Enter Opus 4.5. Check on it in a couple of hours while you work on something else.
Why effective testing remains crucial even as AI makes writing code nearly free
Agents can run multiple rounds of review and verification before you look. But ship to humans without looking yourself, and something subtle always feels off — because fully specifying a system that feels right to a human is hard.
After 15+ years of advocating for test driven development without consistently doing it, coding agents finally made TDD my default workflow
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