Unverified50% confidenceFactExact time
A citation is a clickable link to a real source attached by the answer engine in the generated text, usually filtered through retrieval and reranking stages, and traceable to a specific URL and crawl time.
1
Sources
50%
Confidence
Long-term
Relevance
10/13/2026
First Seen
Sources
Related Entities
Related Claims
Unverified'Source-first' is a working mode of retrieving first and generating afterwards: the system first fetches relevant web pages from a search engine or index library, then lets the model organize the answer on top of the evidence and mandatorily cite source links.63% similarUnverifiedSourcegraph primarily provides code search and cross-repository reference lookup, with an emphasis on precise text-level matching.61% similarUnverifiedPerplexity is positioned as an Answer Engine that directly generates comprehensive answers with cited sources, rather than returning a list of links.61% similarUnverifiedThe matching of citation links typically occurs after generation or in parallel with it, and is essentially semantic similarity matching rather than fact verification; therefore, the presence of an attached link does not mean the fact has been verified.60% similarUnverifiedDiff-based line-level provenance schemes track every editing operation to label each line of text with a human or AI origin, transforming provenance from a probabilistic problem into a deterministic bookkeeping problem.60% similar
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