OpenAI Dev Day 2026: An Event Recap And What Comes Next

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OpenAI used its DevDay on 29 September 2026 to announce more than 20 products and features that reposition the company from a chatbot maker to an agent platform, pitching ChatGPT as a shared surface for humans and agents that reaches 1.2 billion weekly users. The announcements with the largest consequences for software builders are Dots, always-on agents powered by GPT-6 Astra; a rebuilt plugin system; a Decisions API in limited preview; computer-use support in the Agents API; and a new Sign in with ChatGPT flow.

Dots are OpenAI’s biggest consumer bet at the event. A dot is a persistent agent that works toward a user’s goals around the clock, learns preferences over time, and keeps several projects moving at once. Each dot runs on GPT-6 Astra with its own cloud computer and browser, and reaches over 4,000 apps through plugins. Voice calls work today, with texting to come. Access is limited to Pro and Business Premium plans in eligible markets now; Enterprise, Edu and Healthcare customers can use a beta once an admin enables it, off by default. The first dot is included in the plan, and chatting with it does not count toward usage limits, though tasks it starts in Codex or ChatGPT Work do.

Control is a stated design constraint. Each dot works on its own cloud computer, dots can use saved passwords without exposing them to the model, and background “proactive research” is limited to read-only tools. Custom Rules let users allow, require approval for, or block specific actions, an Activity View shows background work, and monitoring can pause or stop a dot. OpenAI still warns that dots can make mistakes. Specialist dots are the enterprise version, with their own identity, credentials and IT-provisioned hardware, starting with pilots in procurement, invoice processing, email marketing, customer support and commercial contracting, plus a planned Microsoft Agent 365 integration for governance.

Plugins are now the way into ChatGPT, Codex and dots. A plugin bundles reusable skills, MCP server connections and optional UI, published once to a shared directory. Announcements include plugin extensions that live in the ChatGPT sidebar (Figma and Adobe showed integrations), a Plugin Creator with a new submission flow, better discovery and ranking, Sites that can host plugins for teams, and support for the proposed MCP Events specification to trigger automations. An OpenAI Marketplace lets eligible enterprise customers spend part of their OpenAI commitment with 32 launch partners including Figma, Adobe, Salesforce, ServiceNow, Harvey, CrowdStrike and Baseten. The Decisions API applies GPT-6 Luna to narrow, repetitive choices with answers drawn from a finite list a developer defines; it is in limited preview. The Agents API now supports computer use, with OpenAI running the Codex harness. On models, GPT-6.1 Sol offers near-Astra intelligence at one-fifth of Astra’s token prices, alongside Ultrafast and Pro 500 in the wider slate.

Why Distribution Now Runs Through Plugins

The strategic shift matters because, as OpenAI’s own commentary framed it, an agent picks a business by outcome, not by brand. A customer asks for a result, ChatGPT understands the job, a plugin is selected, and the business does the work — meaning a business can be hired before the customer knows its name. For builders, the question becomes why a plugin was selected or ignored, which pushes measurement toward intent, activation and completion rather than traditional funnel metrics.

Developer docs also list conversion specs for restaurant reservations, quote requests and product checkout, plus a guide for submitting a Claude Code plugin, suggesting OpenAI wants to accept skills built for other agent ecosystems. Sign in with ChatGPT lets users bring their existing plan to 16 launch partners, which makes a free core app with paid upsells workable — a model that could reshape how software is priced when agents, not humans, are the primary interface.

From Chatbot to Platform in One Year

DevDay has served as OpenAI’s stage for developer-facing launches, and the 2026 edition marks the clearest break yet with the company’s chatbot identity. The scale figure OpenAI cited — 1.2 billion weekly users — frames why the company is treating ChatGPT as distribution infrastructure rather than a single product. The plugin relaunch, MCP support, and the marketplace with 32 enterprise partners all extend the reach of that surface to third-party software, while Dots extend it to always-on work previously done by humans or custom internal tooling.

Preview Status and Unanswered Questions

Several announcements are not broadly available. The Decisions API is in limited preview, with OpenAI promising a broad release without a confirmed date. Dots are limited to Pro and Business Premium in eligible markets, and OpenAI has not published the full list of markets or final pricing for additional dots, added speed, or monthly output. Teams of dots working together remain a vision OpenAI described, not a shipped feature. Texting with dots is listed as coming, with no date given. The Microsoft Agent 365 integration for specialist dot governance is planned rather than live, and enterprise pilot results in procurement, invoicing and support are not yet reported.

Rollouts, Pilots and Marketplace Expansion

Watch for the broad release of the Decisions API, expansion of Dots beyond Pro and Business Premium into broader Enterprise, Edu and Healthcare availability, and the arrival of texting support. The enterprise specialist-dot pilots in procurement, invoice processing, email marketing, customer support and contracting will indicate whether the agent model holds up in production, and the Microsoft Agent 365 governance integration is a milestone to track. For builders, the near-term task is publishing plugins and measuring selection, activation and completion as the OpenAI Marketplace grows beyond its 32 launch partners.

Key Questions

What are Dots?

Dots are always-on agents powered by GPT-6 Astra. Each has its own cloud computer and browser, reaches over 4,000 apps through plugins, and works toward a user’s goals continuously. OpenAI’s examples include a dot that noticed an uninvoiced publication, prepared the invoice, and sent it after approval.

Who can use Dots right now?

Pro and Business Premium subscribers in eligible markets. Enterprise, Edu and Healthcare customers can use a beta once an administrator enables it; it is off by default. The first dot is included in the plan, and chatting with it does not count toward usage limits.

Is the Decisions API generally available?

No. It is in limited preview. OpenAI has promised a broad release but has not confirmed a date. It applies GPT-6 Luna to narrow decisions with answers drawn from a finite list a developer defines.

How do plugins make money for developers?

Plugins are the distribution channel into ChatGPT, Codex and dots, and the OpenAI Marketplace lets eligible enterprise customers spend part of their OpenAI commitment with 32 launch partners. Sign in with ChatGPT, live with 16 launch partners, supports a free core app with paid upsells.

What safeguards do Dots have?

Per OpenAI, each dot runs on its own cloud computer, saved passwords are not exposed to the model, background research is read-only, Custom Rules can block or gate actions, an Activity View shows background work, and sensitive tasks such as password changes stay with the user. OpenAI still cautions that dots can make mistakes.

Source: ThorstenMeyerAI.com