Microsoft's Skala 1.1 tops 32 of 55 GMTKN55 categories, integrating into CP2K, ORCA, VASP

Microsoft Research · rss · 2026-08-21

Microsoft Research released Skala 1.1, its deep-learning exchange-correlation functional for DFT. Trained on 2.5x more data than the first public version, it achieves a weighted average error of 2.8 kcal/mol on the GMTKN55 benchmark and ranks first in 32 of 55 categories—beating the most expensive global hybrid functionals at the computational cost of a meta-GGA, while also delivering accurate electron densities, dipole moments, and molecular geometries.

On accessibility, Skala is now available in open-source CP2K and is being integrated into Psi4, FHI-aims, ORCA, and VASP. The MSR-ACC reference dataset gained new categories such as electron affinities and noncovalent clusters, and Microsoft introduced a living benchmark tracking the computational performance of successive Skala releases across packages and hardware.

Skala follows a continuous-improvement philosophy: each release supersedes the previous one, gaining accuracy as data and training scale while keeping computational cost constant—unlike the traditional "functional zoo" of accumulating functionals.

Original post →

More from Research

Research channel →