Retrieved content chunks, sorted by relevance (highest first).
Optional graphEntities discovered via knowledge graph traversal. Present only when graph retrieval was used (tier >= 2).
Optional researchSynthesized narrative from the deep research phase. Present only when research retrieval was used (tier 3).
Wall-clock duration of the retrieval phase in milliseconds.
Aggregated result of the retrieval phase across all active retrieval strategies (vector search, graph traversal, deep research).