Airtop gave the same multi-step task to a traditional LLM agent and to one compiled with Agent Builder. The LLM agent took 7 min 58 sec and $6.26 per run; the compiled agent took 1 min 21 sec and $0.06. Most agents re-reason every step on every run, making them slow and expensive. Agent Builder does that reasoning once, turning plain-English descriptions of repeatable workflows into compiled automations that run like software. When a run breaks, Airtop automatically builds the fix, verifies it with a real test run, and sends you the repair draft before deploying. Code AGENTSTARTERPH gets Product Hunt readers a free month of Airtop's Starter plan, valid through October.