OpenAI's Own Code Points to New Agent Platform Ahead of September 29 DevDay, But Nothing Is Confirmed Yet

OpenAI's DevDay 2026 is locked in for Tuesday, September 29, at Fort Mason in San Francisco, according to OpenAI's own event page as cited by Cynoteck. This year it's expanding for the first time beyond San Francisco, with satellite "DevDay Exchange" events running in eight cities: Bengaluru, Tokyo, Seoul, Paris, Berlin, London, São Paulo and Mexico City.

Sam Altman is set to deliver the opening keynote via livestream at 10:00 a.m. Pacific, free for anyone to watch. In-person attendance is capped at roughly 1,500 developers, according to Cynoteck. Applications closed July 10, decisions went out in late July, and accepted applicants had 14 days to register at $650 before losing their spot to the waitlist.

That much is confirmed. What isn't confirmed is the headline feature everyone's now talking about: Managed Agents.

What the leak actually shows

TestingCatalog reported on September 7 that it found strings and structures in OpenAI's shipped codebase pointing to a platform called Managed Agents, which would let developers and enterprise customers build agents with customizable environments, skills and plugins, plus an option to self-host.

TestingCatalog's Alexey Shabanov was explicit about the limits of that evidence: the agents interface "is not available yet." No public endpoint, no beta documentation, no pricing has been published by OpenAI. Progressive Robot, which reviewed the same TestingCatalog report, made the same point: "Anyone describing Managed Agents as launched is ahead of the evidence." Shipped client code reveals feature names a team has committed to internally, but it's a directional signal on intent, not a confirmed date or scope.

Crypto Briefing's coverage frames it more definitively, stating flatly that "OpenAI is gearing up to launch Managed Agents" at DevDay. The underlying source, TestingCatalog, never confirmed a launch, only a codebase reference and an expectation the feature broadly follows what Anthropic already offers.

The buildup: a year of agent products

Whatever gets unveiled on September 29 would land on top of a year of real, already-shipped agent products from OpenAI. Frontier, an enterprise management platform for overseeing AI agents at scale, launched in February 2026. Workspace Agents, collaborative AI assistants built into team workflows, went generally available in April.

Most recently, OpenAI officially introduced Presence on July 22, 2026, according to OpenAI's own announcement. Presence is a production-ready platform pairing model reasoning with company-set policies, guardrails and escalation rules, aimed at jobs like resolving billing disputes, insurance claims or IT tickets, with the ability to hand off to a human when needed. Unlike Managed Agents, Presence is real and already available today for voice and chat deployments, per OpenAI's own product page.

The competitive picture

Anthropic has been running a comparable managed-agent offering already in public beta, and TestingCatalog says OpenAI's rumored version "broadly follows" that template. Whether Anthropic's version has hit real scale is unclear. TestingCatalog itself notes that "many users still rely on alternative, cheaper solutions" even where enterprises have adopted managed agents.

Microsoft, OpenAI's largest investor and cloud partner, runs its own Copilot ecosystem that increasingly competes in the same autonomous-workflow space, per Crypto Briefing. Whether OpenAI's Managed Agents (if it ships) undercuts Copilot on price or overlaps with it entirely is an open question none of the current reporting answers.

TestingCatalog also floats a more speculative idea: that OpenAI may be building functionality to let ChatGPT ads resolve directly into an agent-led conversion flow, rather than a static ad response. TestingCatalog itself labels this "speculation," and no source confirms it's tied to the September 29 event specifically. If it's real, it would put OpenAI in more direct competition with Meta and Google's advertising businesses, but there's no filing, product page or on-record OpenAI statement confirming any of it.

What's still unknown

No pricing has been disclosed for Managed Agents. No launch date beyond "possibly DevDay" exists. OpenAI has not issued a statement confirming or denying the feature. The only hard facts right now are the ones OpenAI has put its own name on: the September 29 date, the eight-city expansion, and Presence, which already shipped in July. Whether Managed Agents actually reaches the DevDay stage, or slips the way some leaked features have before, will be settled in three weeks.