> For the complete documentation index, see [llms.txt](https://docs.facephi.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.facephi.com/docs.facephi-en/sdks/backend-sdk/iad/release_notes/2.1.0_release_notes.md).

# 2.1.0

**Release date:** July 20, 2026

## General overview

**Facephi IAD Service 2.1.0** is a minor, backward-compatible version focused on internal service improvements. It introduces no public changes in endpoints, default payloads, or documented public configuration.

## Compatibility

* Fully backward-compatible with 2.0.0.
* It maintains the documented 2.x public contract for `POST /api/v1/iad/liveness/evaluate` and `POST /api/v1/iad/extract`.

## Notes

* The public documentation applicable to this version continues to use the multipart field `capture` and the public response contract based on `diagnostic`, `reason`, `probability`, `score`, `sdkDuration` and `queueDuration`.