Why AI Hallucinates — and How to Reduce It
July 19, 2026 · 7 min read
Hallucination is not a bug that gets patched; it is a property of probabilistic generation.
The root cause
Models optimize for plausible next tokens, not truth. Fluency and accuracy are separate skills.
Grounding
Retrieval, citations, and pasted source material cut error rates sharply.
Ask for uncertainty
Requesting confidence levels and "say if you don't know" measurably reduces fabrication.
Verification habits
Always check names, numbers, dates, quotes, and legal or medical claims against a primary source.