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Greetings from above,
OpenAI just dropped their biggest update of 2025, and if you're building anything with AI, this changes your entire playbook.
Yesterday at DevDay in San Francisco, they announced six major features that went from "coming soon" to "available right now."
We're talking apps inside ChatGPT, visual AI agent builders, and APIs that give you capabilities that didn't exist last week.
I watched the whole thing so you don't have to. Here's what actually matters.
Today, we'll talk about:
📱 Apps running inside ChatGPT conversations (7 already live)
🛠️ AgentKit - build AI agents without writing code
💻 Codex officially launched with Slack integration
🎥 Sora 2 video generation API for developers
🎯 GPT-5 Pro and cheaper voice models in the API
Let's dive in!
Typing is a thing of the past
Typeless turns your raw, unfiltered voice into beautifully polished writing - in real time.
It works like magic, feels like cheating, and allows your thoughts to flow more freely than ever before.
With Typeless, you become more creative. More inspired. And more in-tune with your own ideas.
Your voice is your strength. Typeless turns it into a superpower.
📱 ANNOUNCEMENT #1: APPS IN CHATGPT
ChatGPT isn't just a chatbot anymore. It's now a platform running full applications inside conversations.
What this means:
You say "Spotify, make me a focus playlist" and the actual Spotify app appears in your chat. You're not redirected. You're not opening another tab. You're using Spotify right there.
7 apps launched today:
Booking.com - search and book hotels
Canva - create slide decks from outlines
Coursera - watch courses with AI explanations
Expedia - plan and book entire trips
Figma - convert sketches to diagrams
Spotify - build custom playlists
Zillow - browse homes on interactive maps
For developers:
The Apps SDK is in preview. You can build apps that reach 800 million weekly ChatGPT users without dealing with app stores, ads, or complex distribution.
It's built on Model Context Protocol (MCP) - an open standard. Your app can tell ChatGPT what the user is looking at, making conversations feel natural instead of repetitive.
Submissions open later this year with monetization options including instant commerce inside ChatGPT.
🛠️ ANNOUNCEMENT #2: AGENTKIT
The complete platform for building AI agents. The breakthrough? You don't need to code.
Four components:
1. Agent Builder - Visual drag-and-drop interface
Drag boxes (agents, tools, logic gates, guardrails) onto a canvas
Connect them to create workflows
Someone built a working agent on stage in 8 minutes
Companies like Ramp cut development time by 70%
2. Connector Registry - One admin panel for all data sources
Connect Google Drive, Dropbox, SharePoint, Teams, OneDrive once
Available everywhere across your organization
No rebuilding the same connections for every team
3. ChatKit - Pre-built chat interface
Drop into your app, customize colors and branding
Canva built a support agent in under an hour
Handles streaming, history, rich content automatically
4. Evaluation Tools - Measure and improve performance
Trace every decision step-by-step
Create test datasets
Automated prompt optimization
Test with models from different providers
Plus: Open-source Guardrails
PII masking
Jailbreak detection
Content moderation
Custom rules for your use case
Real results:
Albertsons: 2,000+ stores using agents for instant sales analysis
HubSpot: Built Breeze support agent
LY Corporation: Built work assistant in 2 hours
Available now for Plus, Pro, Business, Education, and Enterprise users.
💻 ANNOUNCEMENT #3: CODEX GOES OFFICIAL
Codex, the AI coding assistant, moved from research preview to general availability. Plus three major updates.
What Codex does:
Works in your code editor, terminal, GitHub, and cloud. OpenAI's engineers now merge 70% more pull requests per week because of it.
Three new features:
1. Slack Integration
Tag @Codex in any thread
Ask it to fix code or add features
Reviews the full context
Posts a link to review changes
Coding help where your team already works
2. Codex SDK
Use Codex in automation and workflows
Set up GitHub Actions for automatic code review
Build custom development tools
Available in TypeScript (more languages coming)
3. Admin Tools for Companies
Edit or delete cloud environments
Set configuration rules
Monitor actions and usage
View analytics on code review quality
The model: GPT-5-Codex trained specifically for coding. Better at refactoring and reviews. Thinks longer on harder problems.
Note: Starting October 20, Codex Cloud counts against usage limits. Check your plan pricing.
🎥 ANNOUNCEMENT #4: SORA 2 VIDEO API
Generate videos programmatically. Already in the Sora app, now available via API.
Two versions:
sora-2: Faster, cheaper, perfect for testing
sora-2-pro: Slower, pricier, higher quality for production
Key features:
Synchronized audio included (dialogue, sound effects, background)
Upload images as starting frames
Remix existing videos ("make the sky purple")
Videos up to 10 seconds
Control resolution and aspect ratio
Five endpoints: create, get status, download, list, delete
Restrictions:
No real people or celebrities
No copyrighted characters or music
No inappropriate content
No faces (for now)
Real use: Mattel animates toy prototypes before building physical versions.
Currently in preview.
🎯 ANNOUNCEMENT #5: GPT-5 PRO IN THE API
OpenAI's smartest model now available to all developers.
When to use it:
Financial analysis requiring perfect accuracy
Legal document review
Healthcare applications
Complex reasoning where mistakes aren't acceptable
When NOT to use it:
Simple tasks
Speed matters more than perfection
High-volume processing where cost adds up
Thinks longer, shows reasoning, catches its own mistakes.
Costs more, takes longer, but delivers better answers.
You must be really rich to use it in API though, it’s EXTREMELY expensive.
Available in the API now.
🔊 ANNOUNCEMENT #6: GPT-REALTIME-MINI
New voice model. Same quality as the large realtime model, 70% cheaper.
Features:
Speech-to-speech (no text conversion)
Natural conversation with emotion
Handles interruptions
Multiple languages
Low latency
Perfect for:
Voice assistants
Customer service bots
Accessibility tools
Educational apps
Available in the API right now.
📦 WRAP UP
What you learned today:
✅ ChatGPT became a platform - apps run inside conversations reaching 800M weekly users
✅ AgentKit lets you build AI agents visually without coding
✅ Codex is official with Slack integration and SDK for automation
✅ Sora 2 API generates videos with synchronized audio programmatically
✅ GPT-5 Pro and cheaper voice models expand what's possible via API
The bottom line:
These aren't future features. They're available right now. Your competitors might already be using them.
The gap between "AI user" and "AI builder" just got way smaller. AgentKit's visual builder means you don't need a dev team to automate your work. The Apps SDK means you can reach 800 million users without traditional distribution headaches.
What changed:
Platform grew from 100M to 800M weekly users in 2 years
Token processing increased 20x
Everything announced is built for production scale
📚 WANT THE FULL BREAKDOWN?
I wrote a complete guide covering every detail, use case, and technical specification from DevDay 2025.
👉 Read the full article: OpenAI DevDay 2025: Complete Announcement Breakdown
You'll get:
Detailed technical specs for each announcement
Real company case studies and results
Step-by-step guides for using each feature
Code examples and implementation tips
Everything you need to start building today
And as always, thanks for being a part of my lovely community,
What did you think about today's edition?
Keep learning,
🔑 Alex from God of Prompt
