Better models won’t fix your agent

you need this now. Most people try to improve their coding ages by upgrading the model, but there's something else that can change performance by up to six times. It's the harness, the code that decides what context the model sees, what it remembers, and what it does next, and almost no one is treating this as a first-class problem. A new system called MetaHarness is a harness for improving harnesses. Instead of compressing text like traditional techniques, MetaHarness stores full-source code and logs, and then uses an agent to iteratively rewrite the harness. And that alone was enough to beat the best hand design systems on coding benchmarks. I'm going to try this out myself, so follow along for an upcoming guide.