Skip to main content
The Human Bit
Ask Bit
← All updates
ChatGPT✓ ReviewedAnnounced 29 September 2026Reviewed 29 September 2026

OpenAI DevDay made agents, plugins and shared workspaces the new default. Start with one reviewed workflow, not the whole platform.

OpenAI's 29 September 2026 DevDay recap announced more than 20 changes across ChatGPT, Codex, the API and business plans: always-on Dots, GPT-6.1 Sol, Ultrafast, Private Intelligence, Codex Cloud, Agents API computer use, Decisions API, plugin extensions, MCP Events, ChatGPT Space, Pages, team tasks, ChatGPT in Slack and Microsoft Teams, Meetings, partner usage and the new Pro 500 tier. The useful move is not to try everything; it is to pick one workflow where AI can prepare the work and a person still checks the decision.

One by one

What each DevDay update actually means for work.

The event was too large for one paragraph. Read it as a menu of workflow surfaces, then choose one safe test.

01

Dots and team tasks: agents that wait between conversations

  1. Watch
  2. Draft
  3. Ask for approval
What OpenAI says
OpenAI framed Dots as always-on agents for eligible paid plans, with team tasks and shared workspaces helping ChatGPT keep work moving after the first prompt.
How people can use it
Use this for repeated follow-up work: checking a board, preparing a weekly status draft, watching for missing inputs, or nudging a project back into motion.
Example
A practice manager sets one non-sensitive admin workflow: every Friday, prepare a draft list of overdue supplier follow-ups from a copied task list, then stop for review.
Bit's thought
Do not start with an always-on agent. Start with a written stop rule: what it may watch, what it may draft, who approves it, and what it must never send or change.
02

Agents API, computer use and Decisions API: agent behaviour inside products

  1. Read the case
  2. Choose a route
  3. Show the reason
What OpenAI says
OpenAI announced computer use in the Agents API, Decisions API and related developer resources for building agentic product workflows.
How people can use it
Developers can use this when a product needs a bounded choice, route, retrieval step, form interaction or task handoff rather than a free-form chat answer.
Example
A support tool routes incoming requests into refund, technical issue or manager review, shows the reason, and asks staff to approve before anything reaches a customer.
Bit's thought
The useful part is the boundary. A good agent workflow has allowed actions, blocked actions, source evidence and a human review point before the result affects a real person.
03

Codex Cloud, code review and security cloud: development work keeps running

  1. Inspect code
  2. Draft fixes
  3. Developer approves
What OpenAI says
OpenAI described Codex running across devices and in the cloud, plus voice, an agents view, desktop code review and Codex Security Cloud.
How people can use it
Use it to prepare pull-request notes, spot risky diffs, explain a codebase, draft tests or keep implementation work moving while a developer reviews the result.
Example
A small product team asks Codex to review a checkout change for missing tests and risky assumptions, then a developer accepts, edits or rejects each finding.
Bit's thought
Code agents are useful reviewers and drafters. They are not release managers. Keep human approval on merges, security-sensitive changes, migrations and anything touching money or identity.
04

Plugins, Sites and MCP Events: apps enter the conversation

  1. Connect app
  2. Open source
  3. Limit permissions
What OpenAI says
OpenAI announced plugin extensions with sidebar panels and file viewers, plugin creation and discovery improvements, plugins in Sites and MCP Events for automations.
How people can use it
This matters when the work lives across tools: CRM records, files, helpdesk tickets, dashboards, forms or internal apps.
Example
A consultant reviews a client research pack inside a shared workspace, opens a source file beside the chat, and asks for an issues list without copying everything into a prompt.
Bit's thought
Connected apps raise the privacy bar. Before linking tools, write a no-paste list, a permission list and a rule for what the assistant may read but not modify.
05

ChatGPT Space, Pages and slides: shared work surfaces

  1. Gather sources
  2. Build a page
  3. Assign owners
What OpenAI says
OpenAI announced ChatGPT Space, collaborative Pages and upcoming slides so work can live in shared spaces instead of one-off chat threads.
How people can use it
Use this for source-backed briefs, research packs, meeting summaries, decision notes and collaborative documents that several people need to inspect.
Example
A team turns a messy source pack into a shared Page with sections for facts, open questions, risks and next actions, then assigns a human owner to each unresolved item.
Bit's thought
A shared AI document feels official quickly. Mark what is sourced, what is a draft, what still needs approval and who is accountable before the page becomes the team memory.
06

Meetings, Slack and Microsoft Teams: AI moves into the daily flow

  1. Capture meeting
  2. List actions
  3. Confirm promises
What OpenAI says
OpenAI announced Meetings notes, @ChatGPT in Slack and Microsoft Teams, and business collaboration updates around everyday team communication.
How people can use it
Use it to turn meetings and team threads into action lists, decisions, blockers and follow-up drafts without asking everyone to copy notes into a separate tool.
Example
After a client call, ChatGPT drafts decisions, open questions and a follow-up email, then the account lead checks names, commitments, dates and tone before sending.
Bit's thought
Meeting AI is not the source of truth. People still confirm decisions, sensitive details, promises, dates and anything that changes a customer relationship.
07

GPT-6.1 Sol, Ultrafast and Private Intelligence: model and plan changes

  1. Run same task
  2. Measure quality
  3. Check the bill
What OpenAI says
OpenAI listed GPT-6.1 Sol, an Ultrafast speed tier, Private Intelligence, partner usage and Pro 500 among the plan, model and usage announcements.
How people can use it
This is where teams decide which jobs deserve a faster or more private setup and which jobs are fine on a cheaper ordinary model.
Example
An operations team tests the same recurring report on its current model and the new faster option, measuring accepted output, correction time and actual cost.
Bit's thought
Do not upgrade because the plan name sounds serious. Upgrade only when a measured workflow needs the speed, privacy boundary or allowance, and the accepted result improves enough to justify it.
08

Marketplace and partner allowance: more places to spend AI attention

  1. Pick one tool
  2. Name the owner
  3. Set an exit rule
What OpenAI says
OpenAI described Marketplace and partner usage of ChatGPT plan allowance as part of the broader DevDay package.
How people can use it
This can make discovery and adoption easier, but it also makes it easier for teams to try tools without a clear owner or review habit.
Example
A manager lets two staff trial one marketplace workflow for invoice triage, with a written test set and a rule that no vendor, bank or customer action is automated.
Bit's thought
Marketplace convenience is not strategy. Pick one workflow, one owner, one review checklist and one exit rule before adding another AI surface to the business.

What changed

OpenAI used DevDay on 29 September 2026 to move ChatGPT from a chat box toward a shared work surface. Officially announced changes include always-on Dots for eligible paid plans, GPT-6.1 Sol, the Ultrafast speed tier, Private Intelligence, Codex running across devices and in the cloud, Codex voice and an /agents view, code review in the ChatGPT desktop app, Codex Security Cloud, Decisions API, computer use in the Agents API, Bedrock Managed Agents, plugin extensions with sidebar panels and file viewers, plugin creation and discovery improvements, plugins in Sites, MCP Events for automations, ChatGPT Space, collaborative Pages, upcoming slides, team tasks, @ChatGPT in Slack and Microsoft Teams, Meetings notes, shareable profiles, partner usage of ChatGPT plan allowance, OpenAI Marketplace and Pro 500. The Verge independently highlighted Dots, GPT-6.1 Sol, 1.2 billion weekly ChatGPT users and the $500 Pro plan, while OpenAI's developer community post grouped the developer resources by models/API, Codex, plugins, collaboration and plans.

Why it matters

This is the clearest signal yet that the practical unit is no longer a single prompt. The new unit is a workflow: something watches, drafts, routes, reviews, updates a shared space, or helps a team finish a document. That is useful, but it also moves errors closer to real work. The Human Bit angle is simple: let AI prepare, search, draft, classify or keep things tidy; keep a person on scope, source checking, approval, sensitive data and anything hard to undo.

Bit, the Human Bit guide

Bit’s takeaway

What not to assumeDo not assume launch-day availability means your plan, region or workspace can use every feature. Do not treat an agent that can act across tools as permission to skip review, approval or data boundaries.

The human take

A person chooses the workflow, supplies the context, checks the sources and approves any action that leaves the workspace or is hard to undo.

Bit, the Human Bit guide

Turn this into a workflow

Do not just read the change. Try it safely.

Bit starts from this reviewed update and helps you build a safe way to use it on your own work: what AI can prepare, what you still check, and where the workflow should stop.

Turn this into a safe workflow with Bit
Try it in a workflowTurn rough notes into a clear updateTry it in a workflowResearch a topic with reliable sourcesTry it in a workflowCreate a presentation from source materialTry it in a workflowOrganise recurring workTool guideChatGPT

Verified facts

  • The Human Bit recommends treating OpenAI's DevDay 2026 announcements as workflow material: choose one reviewed task, define the human approval step, test on non-sensitive work, and only then decide whether agents, plugins, shared pages or API routing deserve a place in production.Reviewed

Sources and method

Announced
Reviewed
Review due
Owner
The Human Bit editorial

The Human Bit Weekly

The useful changes, not every launch.

One short issue every Monday. What changed, what it means for your work, and the part that stays yours.

Step 1 of 2: your email address

Nothing is sent until you confirm on the next step. One email a week, unsubscribe any time.