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Fact Verifier
Citation-backed verification. We ensure every claim generated by your RAG pipeline is explicitly supported by the retrieved context documents.
The "Hallucination Gap"
Standard RAG retrieves relevant docs but doesn't guarantee the LLM uses them correctly. QWED bridges this gap by verifying the semantic entailment between the source and the output.
Source Document
"...refunds are processed within 14 days, but only for purchases made in USD."
LLM Output
"You can get a refund for any purchase within 14 days."
Result: UNSUPPORTED
Missing constraint: "USD purchases only"