LLM Architecture
How Enterprise Backend Teams Should Architect Cross-Provider LLM Fallback Chains When Model Version Fragmentation Breaks Multi-Agent Workflows in Production
Picture this: it's 2:17 AM and your on-call engineer gets paged. A critical document-processing pipeline has started returning malformed JSON. The root cause? Anthropic quietly promoted a new default model alias, and the behavioral contract your agent chain depended on shifted underneath you without a single line