Towards self-driving codebases

We're excited by the reaction to our research on scaling long-running autonomous coding. This work started as internal research to push the limits of the current models. As part of the research, we created a new agent harness to orchestrate many thousands of agents and observe their behavior. By last month, our system was stable enough to run continuously for one week, making the vast majority of the commits to our research project (a web browser). This browser was not intended to be used externally and we expected the code to have imperfections. However, even with quirks, the fact that thousands of agents could work together to produce work that was almost entirely runnable without human intervention felt like a milestone worth sharing. Since then, we've continued our research, and we wanted to go more in-depth on how the harness was built. We're also making part of this research available to try for some users.