Build the cost model for serving your own open-weight model versus paying an API per token. Where is the break-even?

Per-token pricing looks expensive until you compute what an idle GPU costs at 3am. Break-even depends on workload volume and duty cycle, measured throughput, and the engineering cost on both sides.

Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.