What is Alibaba OpenSandbox? Architecture, use cases, and how it works

Alibaba OpenSandbox is an open-source platform designed for executing AI applications within isolated environments, using multi-language SDKs, standardized APIs, and supporting Docker and Kubernetes runtimes. Released under the Apache 2.0 license, it features a four-layer architecture, which includes SDKs, Specs, Runtime, and Sandbox Instances, allowing it to cater to diverse scenarios such as coding agents, GUI agents, code execution, and reinforcement learning training. The platform is built on Alibaba's internal infrastructure and integrates with various AI frameworks and developer tools like Claude Code, OpenAI Codex, and Playwright. For production use, it requires additional considerations such as lifecycle orchestration, multi-tenancy, scaling, and persistent storage. In contrast, Northflank offers a managed sandbox infrastructure, running untrusted code at scale using microVM isolation across multiple cloud providers, supporting both ephemeral and persistent environments, and providing GPU support on demand. While OpenSandbox allows self-managed deployments, Northflank provides a managed service with detailed isolation and orchestration capabilities, reflecting different approaches to sandbox infrastructure for AI workloads.