Nubank cuts AI agent update cycles to under five days with simulated customers
astrange · x · 2026-11-06
Nubank now iterates AI agents faster by testing them against simulated customers, cutting agent update cycles to under five days. Research shows simulated customers let teams cover more scenarios, make decisions faster, and improve customer outcomes before scaling agents, including those powered by open-weight models.
An accompanying paper—accepted to AAAI 2027—argues agent work needs clear definitions of both "good" and "done" before deployment.
Commentator astrange predicts every company will need this capability, most won't be able to hire the talent, and "Simulation as a Service" demand will surge.
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