Agent37 launches low-cost sandboxes for running AI agents

Agent37 (YC F26) says its sandboxes for running AI agents cost under 10% of most sandbox providers, averaging $0.37 per sandbox per month. The company says it now offers a free plan, with over 90% of new signups using it to host agents such as Hermes, OpenClaw, and Claude Code, at infrastructure costs of $0.05 to $0.10 per free user per month.