CCleanSource

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On clean data, provenance, and RAG over human-written sources.

2026-06-21 · 8 min read

Clean, human-written datasets for RAG: why pre-2022 text is becoming scarce

As AI-generated text floods the web, provenance-clean human-written corpora are getting harder to find. Here's why it matters for RAG and how to source pre-2022 public-domain text safely.