Benchmarks
How jscpd v5 compares to other copy/paste detectors in speed, format coverage and token efficiency.
jscpd v5 is benchmarked against five other copy/paste detection tools (jscpd-rs, Duplo, Simian, PMD CPD, and Fallow) across three dimensions:
- Detection speed: jscpd@5 completes in 84ms, the only tool under 100ms and 428× faster than PMD CPD
- Multi-format detection: clones across Vue, Svelte, Astro and Markdown blocks
- AI token efficiency: the
aireporter needs an eighth of the console reporter's tokens on the benchmark corpus, and about 79% fewer on the smaller fixtures run
Embedding Models compares nine open embedding models inside jscpd's experimental --semantic mode, with the thresholds each one needs.
All benchmarks include full methodology and raw data.