{
  "id": 2190381,
  "title": "Show HN: I trained a 125M model to autocomplete piano on-device",
  "url": "https://urgent.news/2026/08/20/show-hn-i-trained-a-125m-model-to-autocomplete-piano-on-device",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-08-20T12:04:38.000Z",
  "source": {
    "name": "Hacker News Best",
    "slug": "hacker-news-best",
    "url": "https://simedw.com/2026/08/20/midi-autocomplete/"
  },
  "original_language": "en",
  "account": null,
  "summary": "I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions…",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}