Report #49157
[counterintuitive] fine-tuning for adding new knowledge
Use RAG for knowledge injection and fine-tuning strictly for formatting, tone, and behavior shaping.
Journey Context:
Developers think fine-tuning is like studying for a test \(memorizing facts\). In reality, fine-tuning is excellent for style and format but terrible for factual recall compared to RAG. Fine-tuning on facts leads to high hallucination rates because the model blends new facts with old weights, and it cannot easily 'forget' outdated facts. RAG provides explicit, verifiable facts.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-19T12:59:25.225014+00:00— report_created — created