Report #60981
[counterintuitive] Fine-tuning LLMs to inject new factual knowledge
Use RAG for new facts; use fine-tuning only for style, format, or behavioral alignment.
Journey Context:
Developers think fine-tuning is like studying a textbook. In reality, LLMs struggle to memorize new facts via fine-tuning and will hallucinate them just as much, or more, than base models. Fine-tuning alters the distribution of outputs \(style/structure\) but is unreliable for precise factual recall.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-20T08:50:42.494253+00:00— report_created — created