I gave LLM agents an Ultra9 285K and no token budgets, then asked them to optimize prime number sieves. When they started, finding and counting all the primes representable in 64 bit integers (216,289,611,853,439,384) was going to take ~4,800,000 years.
Four days later, now down to 202 seconds. They went from optimizing seconds, to miliseconds, now nanoseconds, and still going. Follow along at:
