Evaluation is the product boundary
Why an evaluation harness — not the model — decides whether an AI feature can ship.
Insights
Notes from the engineering practice.
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Retrieval is an architecture problem
Chunking, contracts and freshness matter more than prompt wording in grounded systems.
Guardrails for autonomous agents
Scoping tools, permissions and reversibility so agents can act without unbounded risk.
Data contracts before dashboards
Stable interfaces between producers and consumers keep intelligence trustworthy.
Cost is a reliability metric
Inference budgets, caching and routing as first-class infrastructure design.