Your Agent Demo Works. These 5 Failure Classes Show Up in Production.
This story is from 2026-10-14. It is preserved in the archive; the latest stories are on the live feed.
Your agent passed the demo. It answered the questions, called the tools, produced the summary. Then it meets the real world — a new model version, a slightly reworded system prompt, a tool that changed its response shape — and behavior drifts. Not because anyone broke it, but because nobody was che…
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- 2026-10-14 16:24 · DEV Community — AI
Your Agent Demo Works. These 5 Failure Classes Show Up in Production.