The WebMCP Challenge is in full swing.
What are you building this weekend?
You have until September 3 to submit your project.
https://openai.com/webmcp-challenge
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Use appshots to:
• Give me TL;DR on this Slack thread
• Check out this form and fill it out for me
• Use this API reference to add a feature to my app
• Pull out the themes in these replies on X
• Find out which of these DMs need a reply
• Draft three follow-ups to
You can now get more Codex usage from your plan and credits with three updates today:
1️⃣ GPT-5-Codex-Mini — a more compact and cost-efficient version of GPT-5-Codex
2️⃣ 50% higher rate limits for ChatGPT Plus, Business, and Edu
3️⃣ Priority processing for ChatGPT Pro and
You’ve asked for more flexible ways to get more Codex usage: Introducing credits for Codex on ChatGPT Plus and Pro.
Credits give you more usage beyond what’s included in your plan, kicking in when you hit limits.
As a bonus, we also reset Codex rate limits for everyone. Enjoy!
You can start building and testing apps in ChatGPT with the Apps SDK preview, which we're releasing today as an open standard built on MCP.
Later this year, we’ll begin accepting app submissions for publication.
https://developers.openai.com/apps-sdk
We’re introducing the Agentic Commerce Protocol, an open standard co-developed with @Stripe that enables programmatic commerce flows between users, AI agents, and businesses.
We've updated function calling to support files and images as tool call outputs.
You can now call functions like `generate_chart` or `load_image` and return those files back to the model, rather than just JSON or text. 🌠
https://platform.openai.com/docs/guides/function-calling
We trained gpt-5-codex to be great at both responsive and mobile front-ends. Here's a thread of some examples:
"Make a pixel art game where I can walk around and talk to other villagers, and catch wild bugs."
We’ve (finally) added full support for MCP tools in ChatGPT.
In developer mode, developers can create connectors and use them in chat for write actions (not just search/fetch). Update Jira tickets, trigger Zapier workflows, or combine connectors for complex automations.
You can now use Codex CLI to quickly upgrade from Chat Completions to Responses! This toolkit:
• Finds legacy usage in your repo
• Proposes and applies edits
• Updates import/request shapes
• Runs tests/lints
• Makes a clean branch + PR
The Realtime API is officially out of beta and ready for your production voice agents!
We’re also introducing gpt-realtime—our most advanced speech-to-speech model yet—plus new voices and API capabilities:
🔌 Remote MCPs
🖼️ Image input
📞 SIP phone calling
♻️ Reusable prompts
We’re releasing new Codex features to make it a more effective coding collaborator:
- A new IDE extension
- Easily move tasks between the cloud and your local environment
- Code reviews in GitHub
- Revamped Codex CLI
Powered by GPT-5 and available through your ChatGPT plan.
Two big updates to the Responses API today. 🖇️ Connectors — Pull context from Gmail, Google Calendar, Dropbox, and more in a single API call. 💬 Conversations — Persist chat threads for your users, without running your own database. More below:
http://AGENTS.md is quickly becoming a popular way to share instructions with coding agents in your repo.
Now supported in Cursor, Amp, Jules, Factory, RooCode, and Codex.
GPT-5 Startup Hackathon with @cerebral_valley
We gave startups 24 hours to build with GPT-5. Over 275 builders flew in from around the world to hack with our team and @kevinweil.
👇 Here’s who took home the win of DevDay tickets and over $85,000 in credits- thanks to our
