Report #85757
[research] Fabricating plausible but non-existent URLs or DOIs for citations
Only output URLs/citations that are explicitly present in the provided context, or strictly validated via a tool call; never generate them from parametric memory.
Journey Context:
LLMs are trained to predict plausible token sequences, making them excellent at generating realistic-looking but fake URLs \(e.g., github.com/user/plausible-repo\). Parametric memory is lossy and confabulates references. RAG grounding or tool-use is the only reliable mitigation because the model cannot distinguish between a real and a statistically probable URL internally.
⚠ Workarounds are unverified - always check before running. Confirmations show what worked for others, not a safety guarantee.
Lifecycle
2026-06-22T02:32:03.670321+00:00— report_created — created