This is the real thing: the same trained engine and the same deviation kernel that ship in Bacara Plugin - which adds 128 steps, 128 pattern slots, eleven deviation lanes, scales, macros, MIDI export, and your DAW.
How does this work?
This page runs the product's actual C++ engine, compiled to WebAssembly. The generator, the deviation kernel and the scale quantizer are the exact code that ships in the full product, and every build is tested to produce byte-for-byte the same patterns as the native version. The melodies come from a character-level language model that reads its trained model file, about 1.3 MB (230 KB compressed), right in your browser. The compiled engine itself weighs 25 KB. The 303 voices are hand-built Web Audio, no samples. And there is no server doing any of this: the pattern you hear is computed on your machine and lives entirely in the URL, which is why a shared link reproduces it exactly, deviations and all.