Be careful with the new Agents API, I just paid $1600 for idle containers

A developer reported an unexpected $1600 charge after using the new Agents API, despite carefully monitoring token usage which was around $0.20 per run. The issue stemmed from idle containers (sessions) that were left running. The developer advises others to avoid this mistake by ensuring containers are not left idle, highlighting a potential cost pitfall with the Agents API for recurring background jobs.

This report is one of the first user accounts detailing unexpected costs with the new Agents API, specifically identifying idle containers as the cause.