generated: '2026-07-19'
method: searched
source: https://face.kairos.com/docs/api/changelog
scheme: dated
notes: >-
  Kairos maintains a dated changelog on its API docs. The most recent published
  entries are captured below (recent window). Dates are US format (M/D/YY) as
  published.
entries:
- date: '2019-02-20'
  highlights: Algorithm improvements for face detection and matching accuracy across cloud and on-premise versions.
- date: '2018-12-15'
  highlights: Performance enhancements addressing slow response times and elevated error rates.
- date: '2018-10-15'
  breaking: false
  highlights: Complete migration to deep-learning algorithms; on-premise version launched.
- date: '2018-01-18'
  additions: [show_uploaded_image, show_candidate_images]
  highlights: Backend rewritten in Go for consistency and faster responses; corrected face_id return type.
- date: '2017-06-27'
  additions: [uploaded_image_url]
  highlights: uploaded_image_url added to verify, enroll and recognize (valid for one hour).
- date: '2017-06-16'
  additions: [eyeDistance]
  highlights: eyeDistance metric added to multiple methods.
- date: '2017-05-02'
  highlights: Accuracy improvements, removal of individual faces from subjects, new gender-confidence metrics.
- date: '2017-03-30'
  highlights: Detectors added for lips and glasses.
- date: '2017-02-20'
  highlights: Ethnicity detection, quality metrics and form-upload capability introduced.