- MATISSE: 4-way beam combiner from L, M and N infrared bands
- GRAVITY: 4-way beam combiner in K band, with spectroscpic, frine tracking and astrometric capabilities.
- MIDI: The Mid-Infrared (8-13 mm) 2-way beam combiner
Spectral resolution R=30 (prism), R=230 (grism).
- AMBER: The Near-Infrared (J, H, K; 1-2.5 mm) 3-way beam combiner
Spectal resolution R=30 (low resolution), 1500 (medium r.), 12000 (high r.).
- PIONIER: The 4-way beam combiner in H band using the visitor focus of VLTI