The naive approach is pasting everything into one prompt. It does not scale.
Problems with paste-everything:
- hits token limits
- cost spikes per query
- accuracy drops in a wall of text
The right pattern is RAG. Index your documents once, then per query retrieve only the passages that matter. The model sees a small relevant slice instead of the whole library, so it stays fast and accurate as the collection grows.
ingest -> chunk -> embed -> index (once)
query -> retrieve top-k -> generate grounded + cited answer
That is what actually lets you chat across thousands of documents instead of a handful. The system scales by being selective, not by reading more each time.
CustomGPT.ai is built for this: query across thousands of docs with cited, source-grounded answers.
Scale comes from smarter retrieval, not bigger inputs.
Full guide: https://www.chitika.com/whats-the-best-way-to-chat-with-thousands-of-documents/
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