Tagged “cost”
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Migrating the shape of the state
A definition can be rewritten because it was authored. Accumulated state cannot — it is the only copy, so changing its shape is a migration.
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Detecting drift without reading transcripts
Production has no ground truth, so drift must be measured against each conversation's own early behaviour rather than against a corpus or a golden sample.
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The cost of a turn
Costs scale with usage and with history length, so your heaviest users get more expensive the longer they stay. That shapes every state decision you make.
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One definition, many relationships
One authored character becomes as many characters as you have long conversations, and per-user customisation turns that divergence into forks you maintain.
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How often to rebuild the summary
Rebuild cadence decides how much a summary degrades. Frequent rebuilds compound generational loss; rare ones leave a stale summary against fresh history.
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The definition grows one bug at a time
A character definition that started as a paragraph is now two pages, every line justified by a real complaint, and each line binds less than before.