67.53TB
The Stack v2 contains over 3 billion files in 600+ languages, totalling 67.53TB uncompressed (about 900B training tokens per the card's table).
Dated Feb 2024Source checked 11 Oct 2026Quote found on its page again 16 Oct 2026Basis: stated
In the source's own words
“The Stack v2 contains over 3B files in 600+ programming and markup languages. ... The total uncompressed size of all files is 67.53TB.”
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