CodeDelta's measurement approach is written up in two open technical papers, intended to be read and independently verified. No marketing language — just the algorithms, their assumptions, and their limitations.
How CodeDelta aligns two snapshots of a codebase and classifies every line as added, deleted, changed, or unchanged — across both physical lines (SLOC) and logical statements (LLOC). Covers the two-pass sequence-alignment algorithm, the similarity threshold for pairing deletions with additions into modifications, and the cases where the method is and isn't reliable.
Read paper A →The basis for CodeDelta's optional provenance analysis: which characteristics of source code correlate with machine generation, how the signals are computed, and — importantly — the limits of what such detection can and cannot claim. Written to set honest expectations rather than overstate certainty.
Read paper B →