mere.run is a local-first inference runtime for Apple Silicon and headless Linux. One public CLI covers image, text, speech, vision, music, sound, video, 3D, worlds, training, and local API serving. The optional macOS Studio uses that same CLI, model store, and run history rather than a separate backend. One real terminal session on an M4 Max — chat, image, grounding, image→3D, SFX, music, ...