Garry Tan open-sources g-harness-evals for agent harness comparison
The result suggests harness design barely moves accuracy — the model does — but heavily moves cost and latency, so choosing a harness is mostly an efficiency decision. Practitioners building agent workflows can use the repo's Slack-based simulation and state-based scoring to replicate the setup on their own tasks. The author cautions the numbers come from a dev set approaching saturation, with some OpenClaw runs incomplete.
