The Demo-to-Production Gap: Builders Catalog How Agents Actually Fail

A wave of practitioner posts documents the specific failure modes killing agentic AI in deployment — silent context truncation, prompt injection, cost spirals — with one citing that 88% of agentic pilots never reach production.

The honeymoon between agent demos and agent reality is over, and a cluster of builders is now publishing detailed post-mortems. @divaagurlxw compiled a list of 15 distinct ways AI agents fail in production, naming culprits like silent context truncation, prompt injection, and runaway cost spirals. These aren't exotic edge cases — they are the predictable consequence of taking a system that works in a controlled demo and exposing it to real users and real data.

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