OpenAI Dev Day 2026: A Tour Of The Key Announcements

🔍 Read the full analysis: OpenAI Dev Day 2026: A Tour Of The Key Announcements on ThorstenMeyerAI.com

Buying for a business?Offer from Amazon

Get business pricing on office and shipping supplies

• Business-only prices and quantity discounts
• Tax-exempt purchasing
• Multiple users, one account, clear invoices

Create a free Business account →Free to register

As an affiliate, we earn on qualifying purchases.Hide

OpenAI used its DevDay on 29 September 2026 to announce more than 20 products and features that recast the company from a chatbot maker into an agent platform provider, pitching ChatGPT as a shared surface for humans and agents that OpenAI says reaches 1.2 billion weekly users. The announcement with the broadest implications for developers and businesses is Dots, always-on personal agents powered by GPT-6 Astra, alongside a reworked plugin system, a new Decisions API and the cheaper GPT-6.1 Sol model.

Dots are persistent agents that work toward a user’s goals around the clock, learn preferences over time and can keep several projects moving at once, according to OpenAI. Each dot runs on GPT-6 Astra with its own cloud computer and browser, connects to more than 4,000 apps through plugins, and can use saved passwords without exposing them to the model. Dots are available now for Pro and Business Premium users in eligible markets, with a beta for Enterprise, Edu and Healthcare customers once an administrator enables it. The first dot is included in the plan; chatting with it does not count toward usage limits, though tasks it starts in Codex or ChatGPT Work do. OpenAI said it envisions teams of dots working together later.

Plugins received what the company framed as a major upgrade: plugin extensions that live inside the ChatGPT sidebar, a new Plugin Creator and submission flow, improved discovery in the plugin directory, Sites that can host plugins for teams, and support for the proposed MCP Events specification so plugins can trigger automations when something happens in a connected app. Figma and Adobe showed integrations, and an OpenAI Marketplace lets eligible enterprise customers spend part of their OpenAI commitment with 32 launch partners, including Salesforce, ServiceNow, Harvey and CrowdStrike.

Two further announcements target developers directly. The Decisions API applies GPT-6 Luna to narrow, repetitive choices: a developer defines questions with a finite list of allowed answers, sends text or images as context, and receives a selection usable for content classification, request routing or choosing an agent’s next action. It is in limited preview. The Agents API now supports computer use, letting agents operate software through its interface, with OpenAI running the Codex harness. On the model side, OpenAI introduced GPT-6.1 Sol, which it describes as offering near-Astra intelligence at one-fifth of Astra’s token prices, alongside other releases including Ultrafast and Pro 500. Separately, Sign in with ChatGPT lets users carry their existing plan to 16 launch partners, a model that makes a free core app with paid upsells workable.

Why Builders Should Track Dots and Plugins

The announcements matter because they change how software may be discovered and paid for. As commentary on the event (summarized by ThorstenMeyerAI.com) put it, an agent picks a business by outcome, not by brand: a customer asks for a result, ChatGPT understands the job, and a plugin is selected to do the work — meaning a business could effectively be hired before the customer knows its name. With dots reaching more than 4,000 apps through the plugin ecosystem, plugin distribution now decides who gets work from agents, shifting the competitive question to why a plugin was selected or ignored, and to measuring intent, activation and completion.

For enterprises, specialist dots extend the concept: agents with their own identity, credentials and IT-provisioned hardware, taking on defined responsibilities. OpenAI said it is starting pilots in procurement, invoice processing, email marketing, customer support and commercial contracting, and plans a Microsoft Agent 365 integration for governance. Sign in with ChatGPT, meanwhile, gives smaller developers a way to monetize through users’ existing plans rather than building their own billing.

From Chatbot to Agent Platform

The DevDay announcements mark OpenAI’s most explicit move yet from conversational AI toward always-on agents that act on users’ behalf. Control and safety appear to be the design constraint for Dots: each dot works on its own cloud computer so environments stay separate, background “proactive research” is limited to read-only tools, and Custom Rules let users allow, require approval for, or block specific actions. An Activity View shows background work, monitoring can pause or stop a dot, and certain sensitive tasks — such as changing a password — always stay with the user. OpenAI still cautions that dots can make mistakes.

OpenAI offered concrete examples of what a dot can do: watching customer feedback and returning tested pull requests with videos, rerunning a scientist’s analysis as new data arrives, and updating a sales proposal as requirements shift. One early tester’s dot reportedly noticed an unsubmitted invoice, prepared it and sent it after his approval. The developer documentation also lists conversion specifications for restaurant reservations, quote requests and product checkout — and a guide for submitting a Claude Code plugin, which suggests OpenAI wants to accept skills built for competing agent ecosystems.

“An agent picks a business by outcome, not by brand. You can be hired before the customer knows your name.”

— ThorstenMeyerAI.com commentary on the announcements

Preview Status and Unanswered Questions

Several key details remain unconfirmed or in flux. The Decisions API is in limited preview, with OpenAI promising a broader release without a fixed date in the available material. Pricing beyond the first dot — including the cost of additional dots, extra speed and higher monthly output — has not been fully detailed. It is not yet clear when texting with dots will ship beyond today’s voice calls, when teams of dots working together will arrive, or which markets count as “eligible” for the current rollout. Performance claims for GPT-6.1 Sol — “near-Astra intelligence at one-fifth of Astra’s token prices” — are OpenAI’s own descriptions and have not been independently benchmarked. Real-world reliability of dots, which OpenAI itself warns can make mistakes, is untested at scale.

Rollouts, Pilots and the Marketplace

Watch for the Decisions API’s move from limited preview to general availability, expansion of dot availability beyond Pro and Business Premium plans, and the arrival of texting as a channel for dots. OpenAI said specialist dot pilots in procurement, invoice processing, email marketing, customer support and commercial contracting are starting, with a Microsoft Agent 365 governance integration planned. The OpenAI Marketplace’s 32 launch partners and the Sign in with ChatGPT program’s 16 partners are likely to grow, and the presence of a Claude Code plugin submission guide suggests further cross-ecosystem compatibility moves. Developers, meanwhile, will need to decide whether to build and publish plugins now or wait for clearer evidence of agent-driven distribution actually converting into revenue.

Key Questions

What are OpenAI’s Dots?

Dots are always-on personal agents powered by GPT-6 Astra. Each dot has its own cloud computer and browser, can reach over 4,000 apps through plugins, and works persistently toward a user’s goals. They are available now for Pro and Business Premium users in eligible markets, with a beta for Enterprise, Edu and Healthcare organizations once an admin enables it.

How much do Dots cost?

According to OpenAI, 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. Additional dots, extra speed and higher monthly output per dot will be purchasable later, with pricing details not yet fully published.

What is the Decisions API?

The Decisions API applies GPT-6 Luna to narrow, repetitive decisions. Developers define questions with a finite list of allowed answers and send text or images as context; the API returns a selection that an application can use to classify content, route requests or pick an agent’s next action. It is currently in limited preview.

What is GPT-6.1 Sol?

GPT-6.1 Sol is a new model OpenAI describes as offering near-Astra intelligence at one-fifth of Astra’s token prices. These are the company’s own claims and have not been independently verified by third-party benchmarks.

Why do the plugin changes matter to businesses?

Because dots reach apps through the plugin ecosystem, plugin distribution now largely determines which businesses get work from OpenAI’s agents. Under this model, an agent may select a business based on the outcome a customer asks for rather than brand recognition — making plugin visibility and conversion performance a new competitive battleground.

Source: ThorstenMeyerAI.com