phi

A user reflects on Microsoft's Phi small model family, noting the last major release was in December 2024 and speculating whether Phi 5 will ever be released.

This paper evaluates whether structure-preserving de-identification via surrogate substitution maintains PHI detectability across multiple detectors, using equivalence testing on 57k paired spans across 7 languages and 11 detectors.

Observations from conversations with healthcare payors indicate a shift in focus from AI models to data readiness, PHI handling, and integration across disparate systems.