RAG

You might say

I want AI to answer only from our company docs. How do I set that up?

Finding relevant content from your own material before answering, so the model answers from itWhen answering from company handbooks or policies, the system retrieves matching passages first and hands them to the model with your prompt. Updating the docs immediately updates future answers without retraining; anything missing from the docs must be acknowledged rather than invented.

Know first

Context Window

Retrieval-Augmented Generation

Change one passage, and the answer changes immediately

refund-policy.mdPolicy v1.0

Knowledge base doc content:

Section 3: Custom items are made-to-order and non-refundable once sold.

Matched: §3 “Custom items are non-refundable”

Grounded AI response

User query

Can I return the custom phone case I bought yesterday?

AI response

According to Refund Policy §3, custom items cannot be returned once sold.

Source: Refund Policy §3

Only the Markdown doc was updated without retraining the model; the AI answer changed immediately.

What happens in one RAG answer

Retrieve before generating: The system finds the most relevant passages in the specified material for your question, instead of letting the model answer from memory.

Send material with the question: The model sees the question plus the retrieved passages; the answer must be based on them and can cite where it came from.

Updates take effect immediately: After updating the docs, no retraining is needed: the next retrieval returns the new content and the answer follows.

Quick checkChoose the best answer

Product docs update weekly and AI answers must always follow the latest docs. Which approach fits better?

Fine-tune the model with new docs every weekPaste all docs into the prompt every timeUse RAG: put docs in a retrieval store and retrieve the latest content before answering

You can say this to an AI Agent

Make this assistant answer only from company docs: retrieve relevant passages before answering, and say you don't know when the docs don't cover it instead of making things up. After doc updates, retrieval picks up the new content automatically.

Learn next

1AI Hallucination→2Context Window→3Fine-tuning→

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