The production gap the SDK now addresses was never hidden — it was the open secret of every enterprise agentic pitch for the past 18 months. OpenAI's overhaul transforms the toolkit from a prototype-oriented framework into a platform designed to facilitate production deployment at scale, introducing sandboxing and durability features that compliance teams require before any agent touches real business systems. The structural consequence is that the new SDK implicitly marks every deployment built on the prior version as pre-production. Enterprises that treated the prototype stage as a proof of…