Overview

OpenAI’s agent stack changed in September 2026. This architecture guide separates the Agents API, Agents SDK, Responses API, and Codex SDK by runtime ownership—so teams can choose the right control boundary instead of comparing product names.

Loving Rocks is an enterprise-grade wedding platform designed with a true multi-tenant architecture, isolated databases per tenant, and built-in internationalization for global scalability, security, and long-term operational stability.