OpenAI DevDay recap: Dots, GPT-6.1 Sol, Codex Cloud, Agents API

Melvin Vivas · X post · 2026-09-30 · Open on X

Topics: Industry Trends & Job Market, AI Agents, Tool Use & MCP, AI Dev Tools & Productivity · Level: beginner

Summary

A full list of OpenAI DevDay launches: Dots agents powered by Astra, Codex Spaces, Codex Cloud and Codex Security Cloud, GPT-6.1 Sol, Ultrafast inference, new Pro plans, the Decisions API and Agents API, Sign in with ChatGPT, Plugin Extensions, OpenAI Marketplace and a banked usage reset. Use it as a map of what's new on OpenAI's agent and developer platform.

Key points

Dots: agent teammates powered by the Astra model, compared to xAI's Grok Bot
Codex Spaces is where you work with Dots. Codex Cloud runs tasks remotely, so you can close your laptop
GPT-6.1 Sol: about 1/5 the price of Astra with near-Astra intelligence
Ultrafast mode: 300 tokens/s, 8x faster on Astra
Plans: Pro 500 gives 25x Plus usage, and Pro 200 is back
New developer APIs: Decisions API and Agents API, plus Codex Security Cloud
Sign in with ChatGPT lets you use ChatGPT credits in third-party tools (Devin, Hermes, T3Code)
Also launched: Plugin Extensions, OpenAI Marketplace and a banked Codex usage reset

Resources mentioned

OpenAI Dots · tool · openai.com · paid
Always-on agents in ChatGPT, each with its own cloud computer and browser, that take on ongoing work and personal responsibilities.
Also in: Dots Demo: A Voice AI Agent Handling Travel Booking and Feedback Triage (Melvin Vivas on X · notes), OpenAI Dots: Agents Inside ChatGPT That Debug, Fix, and Open PRs (Melvin Vivas on X · notes), Dots in ChatGPT: always-on AI agents that you hand responsibilities to (Melvin Vivas on X · notes), OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes) and 1 more
GPT-6 Astra · tool · openai.com · paid
The model announced in the quoted launch post, pitched as the developer's most capable model for work, coding, science and cybersecurity, and able to operate a computer.
Also in: Customizing Your Coding Setup with Pi Coding Agent Extensions (Melvin Vivas on X · notes), Pi Agent Council: Ask Multiple LLMs in Parallel and Compare Their Advice (Melvin Vivas on X · notes), Use GPT-6.1 Sol by Default, Save Astra for Emergencies (Melvin Vivas on X · notes), Dots in ChatGPT: always-on AI agents that you hand responsibilities to (Melvin Vivas on X · notes) and 49 more
Grok Bot · tool · x.ai · paid
An early-beta AI agent product from the Grok family that runs in its own computer and browser instance and does tasks in your tools.
Also in: An agent bot that installs and drives Codex on its own (Melvin Vivas on X · notes), Asking a Coder bot to install Codex (Melvin Vivas on X · notes), Using an ML agent to train an open-source TTS model on your voice (Melvin Vivas on X · notes), Organizing Grok Bot Lead Collection in One Google Sheet (Melvin Vivas on X · notes) and 14 more
Codex Spaces · tool · learn.chatgpt.com · check price
Codex workspace where you collaborate with Dots.
Also in: OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)
GPT-6.1 Sol · tool · openai.com · paid
A new OpenAI model announced at DevDay 2026 (name as written in the machine transcript), offered with Fast and Ultra fast speed tiers.
Also in: JevDev: Open-Source UI Tool for Experimenting with Jev (Typesafe.ai) (Melvin Vivas on X · notes), Comparing Coding Models on the Same Task in Devin iOS (Melvin Vivas on X · notes), Customizing Your Coding Setup with Pi Coding Agent Extensions (Melvin Vivas on X · notes), Pi Agent Council: Ask Multiple LLMs in Parallel and Compare Their Advice (Melvin Vivas on X · notes) and 9 more
OpenAI Ultrafast · tool · openai.com · paid
High-speed inference mode running at about 300 tokens/s.
ChatGPT Pro 500 · tool · help.openai.com · paid
A new ChatGPT subscription tier with the highest usage limits and Ultra fast access.
Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes)
OpenAI Decisions API · tool · openai.com · paid
A new OpenAI API, shown as a preview, that lets the model respond and make decisions.
Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes), Creator's favorite OpenAI DevDay announcements (Melvin Vivas on X · notes), OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)
Codex Cloud · tool · learn.chatgpt.com · paid
OpenAI's cloud-run version of Codex, so coding tasks keep running remotely.
Also in: Creator's favorite OpenAI DevDay announcements (Melvin Vivas on X · notes), OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)
Codex Security Cloud · tool · learn.chatgpt.com · paid
A new Codex product that runs in cloud environments and helps defenders harden their infrastructure.
Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes), OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)
OpenAI Agents API · tool · developers.openai.com · paid
OpenAI's managed API for building and running cloud agents on a hosted Codex harness, with orchestration, sessions and context management built in.
Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes), Creator's favorite OpenAI DevDay announcements (Melvin Vivas on X · notes), OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes), Building Software Factories on the OpenAI Agents API (Codex-Powered) (Melvin Vivas on X · notes) and 1 more
Sign in with ChatGPT · tool · developers.openai.com · check price
A sign-in option that lets third-party apps use your ChatGPT account for access to models.
Also in: T3 Code Adds Sign in with ChatGPT, With Support for Multiple Accounts (Melvin Vivas on X · notes), OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)
Devin · tool · x.com · paid
A desktop app from the makers of the Devin coding agent for planning, delegating, reviewing and shipping work across fleets of local and cloud coding agents.
Also in: Using the Devin iOS App to Build iOS Apps (Quick Demo) (Melvin Vivas on X · notes), Use Your ChatGPT Plus/Pro Subscription to Run Devin (Melvin Vivas on X · notes), Devin price cuts and top score on FrontierCode 1.1 Extended (Melvin Vivas on X · notes), Devin Mobile Beta: Cognition's AI Coding Agent Is Now on Mobile (Melvin Vivas on X · notes) and 44 more
Hermes · tool · hermes-agent.nousresearch.com · free
The AI agent the creator uses to automate making explainer videos. It is probably Nous Research's Hermes Agent, but the post does not say so.
Also in: Coworker: free open-source desktop AI coworker app (Melvin Vivas on X · notes), Agent Monitor: see traces, tokens and costs of your coding agents (Melvin Vivas on X · notes), Coworker: An Open-Source Desktop Agent App for Local and Cloud Models (Melvin Vivas on X · notes), jsonl-viewer: Inspect Coding Agent Traces (Codex, Claude Code, Pi, Hermes) (Melvin Vivas on X · notes) and 13 more
T3 Code · tool · x.com · free
An AI coding tool that you can now use by signing in with one or more ChatGPT accounts.
Also in: T3 Code Adds Sign in with ChatGPT, With Support for Multiple Accounts (Melvin Vivas on X · notes), T3Code: a better interface for terminal coding agents (Melvin Vivas on X · notes), T3 Code: An Agent App Praised for Its UX (Melvin Vivas on X · notes), T3 Code Opens Your Project in Any Installed IDE (Melvin Vivas on X · notes) and 2 more
OpenAI Plugin Extensions · tool · developers.openai.com · free
Lets developers build full apps that feel native to ChatGPT and distribute them through ChatGPT and ChatGPT sites.
Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes)
OpenAI Marketplace · website · openai.com · paid
OpenAI's new marketplace where developers sell products and enterprises can pay with their OpenAI commitment.
Also in: OpenAI DevDay 2026 Recap: Dots, Agents API, Codex Cloud & Marketplace (Melvin Vivas on X · notes), Creator's favorite OpenAI DevDay announcements (Melvin Vivas on X · notes), OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)
OpenAI DevDay livestream replay · video · x.com · free
Replay of Melvin Vivas's X Live watch party covering the full OpenAI DevDay 2026 keynote.
Also in: OpenAI DevDay 2026 Replay: Timestamped Guide to the Announcements (Melvin Vivas on X · notes)

Try this

Watch the full DevDay livestream replay, which is posted on the creator's timeline