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OpenAI readies Managed Agents on its platform ahead of DevDay 2026

September 7, 2026 at 09:37 EDT

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Software Dev & Coding
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OpenAI is preparing a Managed Agents product for its developer platform, with an expected showing at DevDay 2026 on September 29 in San Francisco. Unreleased interface and code details describe a flow in which users would create Agents, Environments, and Agent Sessions directly on the OpenAI Platform, then run those agents on OpenAI-hosted infrastructure or in self-hosted environments.

September 29, 2026 · OpenAI

Managed Agents head to the platform

OpenAI is preparing a hosted agent stack for DevDay 2026. Users would create Agents, Environments, and Sessions on the OpenAI Platform, then run them on OpenAI infrastructure or self-hosted environments.

How a run is meant to start

Create Agent

Model, tools, skills, and plugins

→

Set Environment

Cloud sandbox or self-hosted

→

Start Session

A running instance of the task

DevDay footprint

One San Francisco flagship, then eight Exchange cities

San Francisco DevDay

DevDay Exchange cities

Bengaluru, Tokyo, Seoul, Paris, Berlin, London, São Paulo, Mexico City

Sep 29

DevDay 2026 at Fort Mason

$650

In-person registration

Nov 30

Agent Builder leaves the platform

What developers welcome

A Codex Plugin path to build, configure, and deploy agents on the platform, with OpenAI-hosted or self-hosted runs.

What remains unresolved

The UI is not live, pricing is unpublished, and it is unclear whether self-hosted runs still need the Codex Plugin—or whether GPTs are next to be displaced.

Platform transition

Agent Builder shuts down on November 30, 2026

OpenAI currently points remaining workflows to the Agents SDK (code) and Workspace Agents in ChatGPT (natural language). Evals goes read-only on October 31.

GPTs · Nov 2023 AgentKit · Oct 6, 2025 Managed Agents · unreleased

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