Modal sandboxes drive one-third of revenue from agentic workloads
Modal’s sandbox infrastructure now accounts for roughly a third of its revenue, growing 30% month-over-month. The company is shifting toward ephemeral, virtualized environments to support high-volume agentic workflows.
Modal sandboxes, launched in 2023, have become a significant revenue driver for the infrastructure company, representing approximately one-third of total revenue. This segment is expanding at a rate of 30% month-over-month, a surge attributed to the increasing proficiency of large language models in generating code. As AI agents require secure, ephemeral execution environments to run generated code safely, demand for Modal’s isolation technology has accelerated. Current customers include vibe-coding platforms such as Lovable, enterprise users like Ramp, and AI labs utilizing sandboxes for reinforcement learning tasks.
To support this growth, Modal has integrated with Anthropic’s managed agents, allowing users to bring their own sandbox configurations. The company is also evolving its underlying technology from GVisor-based isolation to full virtualized machines, a move intended to improve Linux compatibility. Engineering efforts are focused on snapshotting, forking, and live migration to achieve sub-100-millisecond startup times. This infrastructure aims to enable highly parallelized, short-lived sandboxes for tasks like CI/CD, where each test runs in an isolated environment. Modal argues that this approach reduces overhead compared to traditional sequential execution models, moving the industry away from long-running, persistent dev boxes toward a more efficient, ephemeral computing paradigm.