/ The baseline is priced in, not billed out.
Evaluation, monitoring, incident response, model-upgrade regressions, and prompt versioning are part of the monthly fee and always on. None of them come out of your block count, so a busy build month never quietly turns off the checks that catch failures.
/ Blocks buy new capability, not upkeep.
A block is always a change you asked for and can name. Keeping the existing system healthy is our standing obligation, not a line you spend against. If reliability work grows because the system grew, that is on us to carry, not on your blocks to absorb.
/ No trading safety for speed.
Because the two budgets are separate, there is no lever that lets anyone deprioritize evals or monitoring to ship one more feature. The failure mode where a system quietly degrades under feature pressure is designed out of the pricing.
/ The same discipline we run on our own systems.
Kill switches, observability, evaluation harnesses, model-upgrade regressions. We built the habit inside our own infrastructure, and Run keeps it funded by default so the thing that works on Tuesday still works on Monday two months later.