Grounded Answers
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Lesson 6 of 8

Grounded Answers

A grounded answer stays inside retrieved evidence and makes unsupported gaps visible instead of filling them with guesses.

Active reading
Why this matters

A grounded answer stays inside retrieved evidence and makes unsupported gaps visible instead of filling them with guesses.

Evidence

Use retrieved passages.

Citation

Show where claims came from.

Abstention

Say when evidence is insufficient.

Understand the working model

Grounding is a contract: the answer model should use the supplied evidence, cite it and refuse to invent missing details. This turns “I think” into “the provided source says.”

For high-stakes use, citations should identify the exact document and chunk or section. Users need a path back to the source, not just a decorative “[1]”.

Example
Answer only from Sources A–C. After each factual claim, cite the source label. If the sources do not contain the answer, say “insufficient evidence in the retrieved sources.”
Practice

Apply the pattern above to one real task you already do. Keep the first version small enough that you can inspect every input and output.

Common mistake

Do not let the model use its general memory to silently fill gaps in a grounded workflow.

Key takeaway

A trustworthy RAG answer shows its evidence and admits when the retrieved evidence is not enough.

Next lesson

Evaluate RAG

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