ARC Prize 2025 Top Score 1st Place: NVARC
Ivan and JF explain how NVARC made test-time training competitive under Kaggle constraints: move expensive puzzle generation offline, distill synthetic curricula into compact models, then adapt those models to each evaluation task. An improved ARChitects-style model supplied most of the score; a smaller Tiny Recursive Model added a weaker but usefully different ensemble vote.
YouTube · Watch ↗Summary & key points
- The team pivoted toward synthetic data after early reasoning-model experiments could not run within the offline time and hardware limits.
- Synthetic puzzles were generated from human H-ARC descriptions, with higher-cost code generation performed offline and distilled into a small submission model.
- Test-time fine-tuning was decisive: the TRM component moved from effectively zero to roughly ten percent in a constrained two-hour run.
- A modest standalone component can still help when its errors differ from the stronger ensemble member.
- Daily validation, bug fixing, and resistance to leaderboard overfitting were part of the method—not merely competition hygiene.
Evidence basis: Full YouTube transcript, reviewed 2026-07-29.