AI · Flashcard
A researcher asks Claude for sources and gets three URLs, two of which lead to 404 pages. What explains the dead links?
- AClaude produced plausible-looking URLs rather than links it retrieved, a known fabrication failure mode
- BThe pages were fetched correctly but the publishers removed them in the minutes since Claude answered
- CClaude shortened the addresses to save output length, so each link needs expanding before it resolves
- DThe links open only for signed-in subscribers, because sources are served from Claude's own archive
Why this is the answer
Unless a retrieval tool is actually in play, Claude can write text that has the shape of a citation without ever having fetched the page — Anthropic's support article names this as hallucinating a capability. Simultaneous removal of two pages within minutes is not a realistic account of a repeatable problem; Claude does not compress URLs to save length; and there is no subscriber-gated source archive behind Claude's answers.
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