Faithfulness Score

Also known as: faithfulness metric

A faithfulness score quantifies how well a generated answer is supported by the evidence provided in the input context. Each claim in the response is verified against the source passages, and the score reflects the fraction that can be attributed. High faithfulness indicates the model is grounding its answer in supplied evidence rather than hallucinating; it is a primary evaluation metric in retrieval-augmented generation systems and multi-hop QA benchmarks.