OpenSandbox is Alibaba's open-source general-purpose sandbox platform for AI applications, providing multi-language SDKs (Python, Java/Kotlin, JavaScript/TypeScript), unified sandbox APIs, and Docker/Kubernetes runtimes. It supports diverse AI scenarios including coding agents (Claude Code, Gemini CLI, OpenAI Codex), GUI agents, agent evaluation, AI code execution, and reinforcement learning training. The platform features sandbox lifecycle management protocols, built-in command execution and file operations, a code interpreter, and traffic management through unified ingress gateways with per-sandbox egress controls. Kubernetes deployment enables large-scale distributed sandbox scheduling for enterprise environments.