Authoritative-Source Validation for High-Stakes LLM Outputs

Content

{
  "problem": "For high-stakes factual outputs — medication interactions, clinical dosing, legal citations, financial figures, compliance determinations — a raw LLM generation carries hallucination risk that is unacceptable, because a confident-but-wrong answer causes direct real-world harm. The danger is amplified by fluency: fabricated facts are delivered in the same authoritative tone as correct ones, so neither the user nor the model reliably flags them.",
  "examples": [
    "Drug-drug interaction and contraindication checks",
    "Statute, regulation, and case-citation lookups",
    "Dosage and unit conversions in clinical or chemical contexts",
    "Tax, accounting, and other figures that feed financial decisions"
  ],
  "solution": "Treat the LLM as an orchestration and phrasing layer, never as the source of truth, for any high-stakes fact. The model may decide what needs to be looked up and how to present it, but the actual value must be fetched from and validated against an authoritative structured source before it is surfaced. If no authoritative source confirms the value, the system withholds it and escalates rather than emitting an unverified claim. This inverts the default: the burden is on the fact to prove itself against ground truth, not on the reviewer to catch an error.",
  "anti_patterns": [
    "Trusting an output because it is fluent and confident — fluency is uncorrelated with factual accuracy",
    "Using the same LLM to both produce and self-verify a high-stakes fact; it will often re-affirm its own fabrication",
    "Surfacing an unvalidated high-stakes value with a disclaimer ('verify independently') instead of withholding it — disclaimers transfer liability but not safety",
    "Validating only a sample of outputs when every high-stakes output needs validation"
  ],
  "implementation_steps": [
    "Classify each factual output by stakes: what is the harm if this is wrong? High-harm outputs require mandatory validation before they reach the user or downstream system",
    "Have the model emit a structured query (entity + claim type) instead of a free-text assertion",
    "Resolve that query against an authoritative, maintained source of truth — a curated database or first-party API, not another generative model",
    "Surface the value only when the authoritative source confirms it; on mismatch or a miss, withhold the claim and escalate to a human or a safe fallback",
    "Never allow the model's phrasing to override or 'smooth over' the validated value"
  ]
}