🔍 Read the full analysis: OpenAI Dev Day 2026: Breaking Down The Key News on ThorstenMeyerAI.com
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TL;DR
At DevDay on 29 September 2026, OpenAI announced more than 20 products and features positioning ChatGPT as a platform for AI agents serving 1.2 billion weekly users. The headline items were Dots (always-on agents powered by GPT-6 Astra), a major expansion of the plugin ecosystem, the Decisions API in limited preview, computer use in the Agents API, and the cheaper GPT-6.1 Sol model.
OpenAI used its DevDay on 29 September 2026 to announce more than 20 products and features that recast the company as an agent platform rather than a chatbot maker, with ChatGPT pitched as a shared surface for humans and agents reaching 1.2 billion weekly users. The announcements that matter most to developers and software sellers: Dots, always-on agents powered by GPT-6 Astra; a reworked plugin ecosystem; the Decisions API in limited preview; computer use in the Agents API; and GPT-6.1 Sol, a model OpenAI says delivers near-Astra intelligence at one-fifth of Astra’s token prices.
Dots are OpenAI’s biggest consumer bet. Each 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, connects to more than 4,000 apps through plugins, and can only reach a user’s laptop with granted permission. They are available in ChatGPT on desktop, web and mobile, plus Slack and Teams; voice calls work today, with texting to come. Pro and Business Premium users in eligible markets get access now, while Enterprise, Edu and Healthcare organizations can enable a beta that is off by default. The first dot is included in the plan, though tasks it starts in Codex or ChatGPT Work count toward usage limits.
OpenAI framed control as the design constraint for Dots: each runs on a separate cloud computer, saved passwords can be used without exposing them to the model, background “proactive research” is limited to read-only tools, and Custom Rules let users allow, require approval for or block specific actions. The company still warns that dots can make mistakes. An enterprise variant, specialist dots, gives agents their own identity, credentials and IT-provisioned hardware, with pilots starting in procurement, invoice processing, email marketing, customer support and commercial contracting.
Plugins are now the main route into ChatGPT, Codex and Dots. OpenAI announced plugin extensions that live in the ChatGPT sidebar (Figma and Adobe showed integrations), a Plugin Creator with a new submission flow, improved discovery, Sites that host plugins for teams, and support for the proposed MCP Events specification for triggering 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. A Decisions API, powered by GPT-6 Luna, returns selections from a finite list of answers a developer defines, and is in limited preview. The Agents API now supports computer use, with OpenAI running the Codex harness, and Sign in with ChatGPT lets users carry their existing plan to 16 launch partners.
OpenAI DevDay 2026 at a glance
The five launches that matter, plus Sol
The rest of the slate
Collaboration
ChatGPT SpacelivePagesliveCollaborative slidesnext few weeksTeams and Team Taskslive@ChatGPT in Slack and TeamsliveMeetings pluginbeta, macOSShareable profilesliveCodex
Codex CloudliveCLI refreshvoice, /agentsCode ReviewliveCodex Security CloudlivePlans, enterprise, speed
Pro 500$500, 25× PlusUltrafastAstra now, Sol soonPrivate IntelligencePrivate Inference this fallBedrock Managed Agentsruns in AWSOpenAI Marketplace32 partners, applyWhy Plugin Distribution Now Decides Revenue
Because dots reach more than 4,000 apps through plugins, plugin distribution now decides which businesses get work from agents. OpenAI’s pitch to builders is that an agent picks a business by outcome rather than brand: the customer asks for a result, ChatGPT understands the job, and a plugin is selected — meaning a business can be “hired” before the customer knows its name. For developers, the open questions shift from marketing to measurement: why a plugin was selected or ignored, tracked through intent, activation and completion.
The model pricing move also matters commercially. If OpenAI’s claim that GPT-6.1 Sol delivers near-Astra intelligence at one-fifth of Astra’s token prices holds up in real workloads, it changes the economics of high-volume agent applications. The Decisions API similarly targets a narrow but common pattern — routing, classification and choosing an agent’s next step — that many companies currently build on general-purpose models at higher cost.
From Chatbot to Agent Platform
DevDay is OpenAI’s recurring developer event, and the 2026 edition marks the clearest break yet with the company’s chatbot origins. The through-line of the announcements is that ChatGPT, Codex and the new Dots share a single distribution layer: plugins. According to the source report, the developer docs now list conversion specs for restaurant reservations, quote requests and product checkout, plus a guide for submitting a Claude Code plugin — which suggests OpenAI wants to accept skills and plugins built for competing agent ecosystems.
The Dots rollout follows a phased access model: consumer and small-business plans first, then opt-in beta channels for regulated sectors like Healthcare and Edu. OpenAI also said it plans a Microsoft Agent 365 integration for governance of specialist dots, an acknowledgment that enterprise agent adoption depends on IT control.
“An agent picks a business by outcome, not by brand. You can be hired before the customer knows your name.”
— Source commentary, ThorstenMeyerAI.com
Unproven Claims and Open Questions
Several claims rest on OpenAI’s own descriptions and have not been independently verified. The characterization of GPT-6.1 Sol as near-Astra intelligence at one-fifth the token price is the company’s framing; independent benchmark comparisons are not yet available. OpenAI’s example use cases — a dot preparing and sending an invoice after approval, or returning tested pull requests with videos — are drawn from the company’s own materials and one early tester’s account rather than broad rollout data.
The Decisions API is in limited preview, with a broad release promised but no confirmed date in the available material. Pricing for additional dots, extra speed and higher monthly output is described only as coming later. It is also unclear how quickly the 16 Sign in with ChatGPT partners and 32 Marketplace partners will expand, and how plugin review and ranking will perform at scale. The success of the “agents choose vendors by outcome” model — and how conversion measurement will actually work — remains untested.
Rollout Timeline and Watch Items
In the near term, watch for the Decisions API’s broad release, the arrival of texting for dots, and published pricing for additional dots and per-dot speed and output upgrades. OpenAI has said it plans a Microsoft Agent 365 integration for specialist-dot governance, and enterprise pilots in procurement, invoice processing, email marketing, customer support and contracting should produce the first real-world results on whether specialist dots perform as advertised.
For developers, the immediate practical steps are building and submitting plugins through the new Plugin Creator flow, and preparing for outcome-based distribution. For buyers and IT leaders, the near-term question is whether the admin controls around Dots — off-by-default enterprise betas, Custom Rules and Activity View — meet internal policy before enabling access.
Key Questions
What are Dots in OpenAI’s DevDay 2026 announcements?
Dots are always-on agents powered by GPT-6 Astra, each with its own cloud computer and browser. They work toward a user’s goals continuously, learn preferences over time, and connect to more than 4,000 apps through plugins.
Who can use Dots right now?
Pro and Business Premium users in eligible markets have access now. Enterprise, Edu and Healthcare organizations can use a beta that an admin must enable; it is off by default. The first dot is included in the plan, though tasks it starts in Codex or ChatGPT Work count toward usage limits.
What is GPT-6.1 Sol?
It is a new model OpenAI describes as offering near-Astra intelligence at one-fifth of Astra’s token prices. That claim comes from OpenAI and has not been independently benchmarked yet.
What is the Decisions API and when is it available?
The Decisions API applies GPT-6 Luna to narrow, repetitive choices: developers define questions with a finite list of allowed answers, send text or images as context, and receive a selection. It is currently in limited preview, with a broad release promised but not yet dated.
Why do plugins matter after DevDay 2026?
Plugins are now the way into ChatGPT, Codex and Dots, reaching more than 4,000 apps. OpenAI’s pitch is that agents select businesses by outcome rather than brand, so plugin distribution effectively decides which vendors receive agent-driven work.
Source: ThorstenMeyerAI.com
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