Unverified50% confidenceTradeoffExact time
在线RAG覆盖数小时内最新信息但查询延迟更高，离线RAG牺牲实时性换取毫秒级检索响应，两者代表不同的工程权衡
1
Sources
50%
Confidence
Long-term
Relevance
7/16/2026
First Seen
Sources
Related Claims
UnverifiedPerplexity uses online RAG, does not rely on a pre-built index library, and triggers real-time web crawling at each query, at the cost of relatively higher query latency.73% similarUnverified传统RAG系统依赖预建索引，而实时信息流要求索引几乎零延迟更新73% similarUnverifiedTraditional RAG (Retrieval-Augmented Generation) approaches suffer from indexing lag in large-scale active codebases, potentially retrieving deleted or outdated functions.70% similar
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