Perplexity
The benchmark for cited AI search, with Deep Research reports.
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FreemiumAI Search Engines
RAGFlow
Open-source RAG engine for complex documents with DeepDoc parsing and hybrid retrieval — best for hard documents.
FreeAI Search Engines#rag#knowledge-base#deepdoc
Capabilities
RAG knowledge baseDeep researchLLM app development
What it can do
- Enterprise knowledge-base Q&A
- Complex document retrieval
- Hybrid-retrieval RAG
- Private knowledge bases
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