
The Frontier
Claude Fable 5 closes 82% of a human research record in nanoGPT speedrun
Two releases landed tonight that say a lot about where AI is heading: a benchmark that finally measures whether models can do research rather than talk about it, and DeepSeek making its API cheaper exactly when nobody is watching. Prime Intellect's NanoGPT Speedrun Frontier is the first public, at-scale test of autonomous AI research — and Claude Fable 5 lapped the field. The team ran 153 autonomous runs across 18 frontier models, each agent getting the same repo, a rulebook, one prompt, and ei










