Fusion, the next-generation Cursor Tab model, represents a significant leap forward in code editing by swiftly predicting edits near the cursor and suggesting subsequent navigation points, known as "jumps," thereby reducing the tedium often associated with coding. Since its inception in March 2024, the Tab model has evolved through numerous updates, leading to a substantial increase in both speed and intelligence, with the current Fusion model offering over a billion edited characters daily and a 100-fold growth in request rates. Fusion enhances upon its predecessor by accurately predicting over 25% more difficult edits per line and extending the length of suggested changes by more than tenfold, all while significantly reducing latency and offering instant, higher-quality cursor jumps with improved context awareness. These improvements are due to cleaner data, extended context windows, and careful training for larger edits, with the model now outperforming many language models in generating code. Fusion's rollout in client release 0.45.0 promises further enhancements in codebase context and integration with Supermaven technology, marking a new era in efficient and intuitive code editing.