Evaluation, Testing & Optimization·Task 4.4·Bloom: remember·Difficulty 1/5·6 min read·Updated 2026-07-14

The Core Failure Taxonomy for Production Claude Systems

Diagnose system issues (prompt failure, hallucinations, model mismatch)

SUBy Solomon UdohReviewed by Solomon UdohAI-assisted · human-reviewed
In short
Production Claude issues fall into distinct failure classes: prompt failure, hallucination, model mismatch, and orchestrator-workers failure. Each class has a different root cause and therefore a different fix, so classifying the failure correctly is a prerequisite step, not an afterthought. An LLM system rarely crashes on failure; it silently produces a subtly wrong response, so failures must be actively classified rather than caught automatically by errors and exceptions.

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