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Notes from building agent systems

Evaluation harnesses, orchestration patterns, memory design and the failures behind them — written up while the details are still fresh.

All postsllm-agents 4agent-safety 2evaluation 2multi-agent-systems 2orchestration 2agent-economics 1agent-evaluation 1agent-failure-modes 1agent-governance 1agent-memory 1agent-sandboxing 1agent-security 1
Glowing data visualization dashboard on a dark screen showing cost breakdown charts and metrics
20 Sept 2026·7 min read

Unit Economics of an Agent Run: Cost Accounting for Multi-Step Systems

Token pricing hides where agent spend actually goes. Cost per successful task, instrumented by role and tool call, is the number teams can act on.

agent-economicscost-accountingllm-observability