The Future of ChatGPT: OpenAI Turns Conversations into an AI Platform at Dev Day 2025

OpenAI’s Dev Day 2025 has marked a major turning point in the AI industry. Once a conversational chatbot, ChatGPT is now evolving into a complete AI platform where users can learn, build, design, automate and even create videos without ever leaving it.

The company unveiled a series of updates showing how ChatGPT is going to become an all in one ecosystem for users and developers. From in chat apps and customisable AI agents to advanced coding tools and realistic video generation, OpenAI is making AI more fun, interactive, accessible, and useful than ever.

1. ChatGPT Apps: Bringing Tools Directly Inside the Chat

The first big reveal in the event was ChatGPT Apps or mini applications that run directly inside the ChatGPT interface. Users, instead of switching between websites or installing new software, can now interact with services seamlessly within a chat.

OpenAI also launched a Software Development Kit called Apps SDK that allows developers to build their own interactive tools that work right inside ChatGPT. During demo, OpenAI even showcased some exciting real-world examples:

• Coursera will let users watch educational videos and get personalised explanations during a chat.
• Canva enables you to design graphics or presentations and quickly convert them into a polished pitch deck.
• Zillow helps users browse, filter, and analyse real estate listings, all within the chat window.

Additionally, OpenAI also plans to launch a ChatGPT App Directory, similar to an app store, where users can browse and install apps. Developers will even be able to monetise their creations through in-chats purchases and create a new AI driven marketplace.

2. AgentKit: Build Your Own AI Helpers

AgentKit, another standout update, is OpenAI’s toolkit for creating personal AI assistants. These agents can handle repetitive or complex tasks automatically like sending emails, booking travel, or managing spreadsheets. What makes AgentKit special is that it’s designed for everyone:

• It offers a visual builder to help you create agents without writing a single line of code.
• It also includes a Chat Kit that allows developers to embed an AI chat interface into websites or apps. 

In one live demo, OpenAI engineers built two fully functional AI agents in just six minutes, showing how simple and fast the process has become. This could be a game-changer for businesses looking to automate workflows or build smart customer service bots.

3. Codex GA: Smarter Coding with GPT-5

OpenAI’s Codex is the company’s AI coding assistant that has also received a massive upgrade. The new version called GPT-5 Codex is now globally available and is more capable than ever. The model can:

• Write and fix code in multiple languages.
• Connect to real-world devices such as turning on lights or controlling a camera via code.
• Integrate with workplace tools like Slack to automate tech operations.

Codex GA bridges the gap between programming and automation that helps both developers and non-coders bring their ideas to life faster.

4. Sora 2 API: AI That Creates Realistic Videos

The launch of Sora 2, OpenAI’s text to video model, took the spotlight as one of the most impressive demonstrations of the event.

Users can now simply describe a scene, and Sora 2 will generate a realistic video complete with synchronised audio. For instance, typing “a puppy running on a beach” creates a lifelike clip with waves, motion, and sound effects. Sora 2 brings some major upgrades:

• More natural movement and smoother camera transitions.
• Improved lighting and visual depth.
• Audio matching, so background sounds and voices align with what’s happening on screen.

Several brands have already started using Sora 2 to produce promotional and product videos, cutting costs and speeding up production dramatically.

5. The GPT-5 Family: Tailored AI for Every Need

Open AI also introduced a range of GPT-5 models specially designed for different users:

• GPT-5 Codex: Optimised for developers and automation tasks.
• GPT-5 Pro: Built for professionals and researchers who need higher precision and reasoning power.
• GPT Real-Time Mini: Designed for fast, low-cost, real-time interactions like voice chats and lightweight apps.

This flexibility shows that OpenAI wants ChatGPT to serve every kind of user, from individuals experimenting with AI to enterprises running complex workflows.

Conclusion: ChatGPT as an AI Operating System

OpenAI’s vision is clear: ChatGPT is no longer just a chatbot. It’s becoming an AI operating system, a platform where you can learn, create, build, and collaborate, all through natural conversation.

For developers, it’s a new frontier to innovate and earn. For users, it’s a single place to access multiple digital tools without jumping between platforms.

If this trajectory continues, we might soon stop saying “I’ll download an app” and start saying “I’ll just ask ChatGPT.”