How do you design deterministic fallback pipelines for LLM failures?

Deterministic fallback pipelines replace probabilistic LLM outputs with rule-based or cached responses under failure conditions.

When LLMs fail or behave unpredictably, systems must guarantee deterministic behavior. This is achieved by fallback pipelines that use cached responses, templated rules, or simpler deterministic models. The fallback is triggered by latency thresholds, safety violations, or confidence scores. This ensures system reliability under all conditions.