Benchmarks
Accuracy Benchmarks
Detector accuracy comparison for Czech identifiers across FastPII and general-purpose alternatives.
Accuracy Benchmarks
FastPII is optimized for Czech PII detection, so its strongest advantage shows up on identifiers that general-purpose tools often miss or misclassify.
Per-detector comparison
| Detector | FastPII | Presidio | Macie | DLP |
|---|---|---|---|---|
| Rodné číslo | >95% | 22.7% | 18.4% | 15.9% |
| IČO | >99% | 45.3% | 38.7% | 41.2% |
| DIČ | >98% | 31.2% | 24.6% | 28.8% |
Why FastPII performs better on Czech data
- It is built specifically for Czech identifiers.
- Validation logic reduces false positives.
- Checksum-aware detection improves precision on structured values.
Practical takeaway
If your workload includes Czech national or business identifiers, accuracy differences this large directly affect compliance risk, reviewer workload, and prompt-safety outcomes.