# How is GenderAPI accuracy measured?

> A useful accuracy evaluation reports its test population, date, sampling method, coverage of unknown results and results by region and writing system. The current methodology page describes an evaluation protocol, not a measured accuracy percentage. V2 confidence and confidence_kind explain each result’s evidence; they are not a substitute for a benchmark on representative data.

Canonical HTML: https://www.genderapi.io/frequently-asked-questions/how-accuracy-is-measured

Last reviewed: 2026-09-26

## Answer

A useful accuracy evaluation reports its test population, date, sampling method, coverage of unknown results and results by region and writing system. The current methodology page describes an evaluation protocol, not a measured accuracy percentage. V2 confidence and confidence_kind explain each result’s evidence; they are not a substitute for a benchmark on representative data.

## Related canonical guidance

- [Accuracy methodology](https://www.genderapi.io/accuracy-methodology)
- [Response fields and confidence](https://www.genderapi.io/docs/v2/responses)