AIAgent infrastructureStory 04
Cloud agents get a managed runtime
What changedOpenAI put the harness behind Codex into a public-beta Agents API. It manages durable sessions, context, orchestration and long-running work while builders choose an OpenAI, partner or self-managed environment. That removes substantial infrastructure work, but the service is still beta and the performance numbers in the announcement are selected customer testimonials.

The useful part
Why it matters
Teams can now buy a managed agent loop while retaining a choice of execution environment, changing the build-versus-buy decision for production automation.
Worth doing
What to do next
Compare session recovery, tool security, observability and total workload cost against one existing agent before migrating production jobs.
Keep in mind
Good to know
The API is a public beta, and the quoted cost, latency and reliability gains are vendor-selected customer reports.
Evidence