Why teams choose it
Atlas deepens the full C1 knowledge map with coherent article text while keeping each entity, split, source revision, and rights boundary visible.
Use it to
- Continue training on coherent prose
- Build source-aware retrieval
- Compare compact facts with long-form context
Know before you use it
- Covers the same 999 topic families as C1
- Wikipedia coverage and writing biases remain
- It is not a general web-scale corpus
Lineage
C1 → C2
Clear rights notes
Atlas uses pinned English Wikipedia article revisions with attribution and licence evidence kept in the release.