NanoGPT Speedrun time reportedly drops from 39.9 to 6.7 seconds

The developer says retrieval-augmented n-gram hints cut their NanoGPT Speedrun time from 39.9 to 6.7 seconds, a drop they say exceeds the combined 81.4% reduction from every record since 2025. They say the hints address rare, repeated web content a language model cannot memorize in time. Another poster praised the result and expressed surprise that big nanoGPT gains have come from AI-assisted humans rather than autoresearch.