A field guide for developersVOL. 04
Give every AI feature an explainable budget.
Define ownership, execution limits, and usage evidence before expanding adoption.
Explicit costs · Repeatable setup · Checkable evidence
BEFORE YOU CHOOSE
Ask better questions before you connect.
01 / COST
Separate input, output and cache.
Compare the same workload using the same units.
02 / CAPABILITY
A model label is not a test result.
Validate images, tools and context separately.
03 / SERVICE
Read the sample, not just the percentage.
Keep the observation window and sample count visible.
INDEX / 03
Field notes
Cost-management procedures rather than fixed quotations. Verify current rates, billing units, and available models through official information and your account.
01
Cost allocation
02Allocate shared API usage to the features that caused it
Connect features, tasks, and calls with stable identifiers while keeping unknown usage visible.
6 min readBudget controls
03Set enforceable spending boundaries for multi-step tasks
Bound rounds, context, and tool results, and distinguish alerts from execution controls.
6 min readUsage reconciliation
Build a traceable API usage reconciliation record
Align periods and units before investigating missing or duplicate entries.
6 min read