Cloudflare Sandbox vs. VMs for AI Agents

Cloudflare Sandbox SDK and Freestyle VMs both offer solutions for running untrusted code, but they cater to different needs based on the nature of the application workload. The Cloudflare Sandbox SDK is ideal for applications already operating within the Cloudflare ecosystem, providing a TypeScript API for managing tasks in isolated environments through containers. It excels in edge-native, request-shaped scenarios where tasks are short-lived and can tolerate losing runtime state after inactivity. In contrast, Freestyle VMs are designed for AI agents and applications requiring a persistent, machine-shaped workspace. These VMs offer a full Linux environment capable of running indefinitely, supporting long-running processes, and maintaining state across sessions, which makes them suitable for complex, multi-service setups where continuity and state preservation are crucial. Freestyle VMs are particularly advantageous for scenarios where branching and parallel processing are necessary, as they allow forking of running environments, maintaining the current state, and providing a robust platform for development and debugging.

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