The "alphas-2025: Workshop on precision measurements of the strong coupling constant" will be held at the CNRS Paul Langevin Center in Aussois (Savoie) in the third week of December 2025 (Sun. 14th to Friday 19th).

The workshop aims at exploring in depth the current status and upcoming prospects in the determination of the QCD coupling constant $\alpha_S(m_Z)$ from the key observables where high-precision experimental measurements and theoretical calculations are (or will be) available: (i) lattice QCD, (ii) hadronic decays of tau leptons, (iii) deep-inelastic electron-proton scattering and