Time, tokens, money, tool calls, and risk tolerance are finite resources. Carrying remaining budgets in state allows routers and loops to degrade or stop predictably.

Budgets Are First-Class Graph State

In this situation—finishing a research answer within two minutes and a fixed model budget—which choice best applies “Budgets Are First-Class Graph State”?

Different nodes may need different context, reasoning, modality, latency, or privacy properties. A model router uses task evidence and fallback policy rather than a single default everywhere.

Model Routing Matches Capability, Risk, and Cost

A Pareto frontier contains options where improving one objective worsens another. It prevents a hidden weighting from collapsing quality, cost, latency, privacy, and risk into one unexplained score.

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