Intro
Last month, Anthropic published a rare kind of incident review.
The rare part was not that they had bugs. If you build large-model products, bugs are part of the deal.
The rare part was that they wrote up three production incidents in detail: how each one was introduced, why testing missed it, why it was hard to reproduce internally, and what they changed afterward.
After reading it, I think the review is worth studying closely. If you build LLM Agents, especially systems with multi-turn tasks, tool calls, context compression, and reasoning trace management, these failures are not edge cases. They are waiting on the road.
