OpenAI Developers

Annotations paired with WebMCP give your agents more context to act on. Check out how @kagigz uses custom annotation controls and suggested prompts to help users edit scenes and update expenses in ChatGPT’s browser.

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learn.chatgpt.com/docs/annotatio…

Already showing people what they can build with Codex? Applications to become a Codex Ambassador are open again. We support you in hosting meetups or sharing what you’ve learned: developers.openai.com/community/code…

Here’s what our Codex Ambassadors have been up to: They hosted Astra Commons, bringing people together in local cafés to share what they were making with Astra and try out ideas together. In London, a meetup turned into a build challenge. Rohith made Forma, an animation tool with a jellyfish demo. In West Lafayette, attendees teamed up to build a visualizer and projected it in the café during the meetup. In Manila, a lights-and-sound specialist with no coding background showed a Raspberry Pi visualizer he had prototyped with Astra. And in Buenos Aires, the host used Codex to build a tool that saved half the places for people who’d missed out before. Meetups are one way to get involved. If you’re more into making demos or tutorials and sharing what you’ve figured out, we'd love to support what you're shipping too.

Already showing people what they can build with Codex? Applications to become a Codex Ambassador are open again. We support you in hosting meetups and sharing what you’ve learned: developers.openai.com/community/code…

Here’s what our Codex Ambassadors have been up to: They hosted Astra Commons, bringing people together in local cafés to share what they were making with Astra and try out ideas together. In London, a meetup turned into a build challenge. Rohith made Forma, an animation tool with a jellyfish demo. In West Lafayette, attendees teamed up to build a visualizer and projected it in the café during the meetup. In Manila, a lights-and-sound specialist with no coding background showed a Raspberry Pi visualizer he had prototyped with Astra. And in Buenos Aires, the host used Codex to build a tool that saved half the places for people who’d missed out before. Meetups are one way to get involved. If you’re more into making demos or tutorials and sharing what you’ve figured out, we'd love to support what you're shipping too.

Now in beta: composer predictions in Codex for Pro users. Codex can now suggest your next message based on your conversation and how you talk to it. One of the most loved new features we've ever tested internally.

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Available in beta for Pro users in the Codex desktop app, for local tasks. Hit “Tab” to accept a suggestion, edit it if needed, then send. You can turn composer predictions off in Settings. help.openai.com/en/articles/20…

An update for builders using Codex on Windows: We’ve built a new sandbox mode using @Microsoft’s Execution Containers (MXC) for faster setup, stronger network enforcement, and granular file access controls. Requires a compatible Windows 11 device.

learn.chatgpt.com/docs/windows/w…

The attention to detail is a little concerning.

Ultrafast is rolling out today for GPT-6.1 Sol in the API, Codex, and ChatGPT Work. Near-Astra intelligence at up to 8x faster speeds than Sol Standard, so you can build as fast as the ideas come.

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API pricing for GPT-6.1 Sol in Ultrafast mode is $12 per million input tokens and $60 per million output tokens. Built for work where speed and intelligence make a difference: debugging an outage, agents navigating apps, and live experiences where every second counts.

Build richer, more interactive plugins for ChatGPT. With plugin extensions, you can launch plugins from the sidebar, support @ mentions, and add file viewers. See how in this walkthrough with @coreyching:

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See who’s building with plugin extensions: @Adobe, @Canva, @figma, @Shopify, @instacart, @Atlassian, @tldraw and @MagicPathAI.

Missing DevDay? We are too. Here’s what our community has been building with the @modretro Chromatic.

Stream images from your phone to the ModRetro Chromatic:

Let your app choose the right model, tool, or action in near real-time with Decisions API, now available to all developers in public beta. The Decisions API makes decisions up to 10x faster than GPT-6 Luna through the Responses API.

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Powered by GPT-6 Luna, it accepts text and image inputs and supports 3 kinds of outputs: Predicates: Estimate the probability that a statement is true. Choices: Select from predefined options, with confidence scores. Scores: Evaluate an input against a numeric range.

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Talk to Codex and give your keyboard a break:

We’re making it easier to qualify for higher OpenAI API rate limits. Five paid usage tiers become three: Build, Launch, and Grow. You can qualify for Grow, our new highest tier, with $500 in total API payments—down from $1,000 for the previous highest tier.

If you’re on a paid tier, your organization moves to its new tier automatically. No action needed. More details about qualifications and rate limits: platform.openai.com/settings/organ…

If you live in the terminal, this one’s for you. Watch how to start tasks by voice, manage agents across projects, and explore another direction in a separate worktree with the Codex CLI.

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All in pursuit of a better burrito 🌯

Achievement unlocked: Meet the winners of our Side Quests.

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Stay tuned for more side quests 😉

Building with the Agents API? Catch up on what’s new:

Your dot learns how you work, keeps context across apps, coordinates Codex tasks, and flags what needs your attention.

x.com/i/article/2106…

Heard you liked the @modretro Chromatic. So we added one to the side quest. You have 48 more hours to join. side-quests.openai.chatgpt.site

Submissions close in 2 days, October 3 at 2:30 PM PT.

Heard you liked the @modretro Chromatic. So we added one to the side quest. You have 48 more hours to join. side-quests.openai.chatgpt.site

Submissions close in 2 days, October 3 at 2:30 PM PT.

From an idea to a game you can play on @modretro. We caught up with @Casey to talk about the future of creativity:

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dots demo. Now... with better WiFi.

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Shareable profiles bring your Sites and plugins together in ChatGPT, so others can find and reuse what you’ve made. Built it? Show it off.

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Code faster, review changes, and keep parallel work moving. 🧵 Here's a roundup of all the developer updates from OpenAI DevDay:

Generate code faster and keep iterating with Ultrafast in Codex: developers.openai.com/api/docs/guide…

Ready for a DevDay side quest? 10 builder challenges. 5 Codex Micros up for grabs. Complete any 5 side quests to earn 1 raffle ticket for each. 48 hours. Join from anywhere 🌎

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Register and complete the challenges in this Site: side-quests.openai.chatgpt.site

Give your app real-time decision-making with Decisions API, powered by GPT-6 Luna. Define questions and possible answers to classify content, route requests, or choose an agent’s next action. Available in limited preview.

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Send text or images as context. For example, supply a support request and the teams it could go to. The API returns a selection your app can use. Preview access is limited to selected API customers for testing. Broad release planned in the coming days: openai.com/index/devday-2…

Codex CLI just got a major refresh, with a new look and powerful new capabilities. We’re continuing to invest in Codex CLI for developers who live in the command line. New full-screen interface, better readability, and ways to manage parallel work, all inside your terminal.

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Older history loads as you scroll, beyond your terminal’s scrollback limit. Your composer stays pinned and ready for your next message, so you can explore long sessions without scrolling back to type.

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You can finally close your laptop now and your agents will keep working. Codex cloud environments are here. Reusable environments mean less setup and faster starts, with your repo, dependencies, scripts, and settings already in place.

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Start a task in the cloud, then follow its progress and steer Codex from your phone or another computer, even with your laptop off. We’re also bringing the familiar desktop app experience to web and mobile.

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Ultrafast is our fastest way to build with Astra yet: in Codex, it runs up to 8x faster than Astra Standard and 4x faster than Astra Fast. Bring your ideas to life as fast as you can type them.

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In Codex, Ultrafast generates code faster, so you can move more quickly from idea to code to iteration 🏎️ In the API, combine it with WebSocket mode in the Responses API to build real-time experiences with frontier intelligence.

GPT-6.1 Sol is here. Upgraded with stronger agentic coding and computer use, near-Astra performance, and cached input at a 95% discount to standard input pricing. GPT-6.1 Sol is built for complex refactors, deep codebase investigations, and long-running agents across apps.

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API pricing is $2 per million input tokens and $10 per million output tokens. Cached input is just $0.10 per million tokens—95% less than standard input pricing and 50% less than GPT‑6 Sol’s cached input pricing. Near-Astra performance for sustained, multi-step workloads.

dots. An always-on agent with its own cloud computer and access to your plugins and context. Powered by GPT-6 Astra, your dot proactively keeps your projects moving. Here’s what developers can hand off to their dot: – Triage recurring bug reports and feature requests across your connected apps. – Scope failing builds and feature improvements around your priorities. – Build and test changes with Codex, then bring back complete PRs for your review. Open your dot’s cloud computer to inspect the work, or connect your own so it can work with your local files and code.

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Help your dot understand your codebase, priorities, and what needs your approval. Then give it an ongoing development goal. Set up your dot: learn.chatgpt.com/docs/dots

Joining us in San Francisco today? Plan your OpenAI DevDay :

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Full Agenda: devday.openai.com

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We saved you a seat. See you tomorrow for the OpenAI DevDay keynote: openai.com/live/

Meet the winners of The WebMCP Challenge. These 10 projects show what people and agents can build together when websites expose structured tools agents can use. 🧵 See the winning projects and the builders behind them:

@devpost MASIL uses WebMCP to help Korean elders practice calligraphy and play Janggi alongside an agent. Built by SonSangjoon. devpost.com/software/masil…

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OpenAI DevDay roll call Where are you joining us from, and what are you building?

We’ve fixed a bug that was degrading image understanding in GPT-6 Sol and GPT-6 Luna. You should now see better results on visual tasks in the API and Codex, including computer use.