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OpenAI DevDay 2025 is once again making waves in the tech industry with a series of game-changing reveals. From the unveiling of GPT-5 Pro and Sora 2 to new developer tools and a surprise cameo by former Apple design chief Jony Ive, the event reflected OpenAI’s ambitious vision for AI, creativity and hardware moving forward.

If you weren’t able to watch the livestream, then here’s a full roundup of everything announced at OpenAI’s annual developer conference this year.

1. OpenAI Unveils GPT-5 Pro and Real-Time AI Models

GPT-5 Pro: The Next Leap in AI Intelligence

Sam Altman, the CEO of OpenAI, made the announcement on the launch of GPT-5 Pro, its most recent and sophisticated iteration of its marquee model. The new model enables faster inference, better richness of the context and is meant to drive more personalized and performant user experiences. Today we are making GPT-5 Pro available to developers worldwide on the OpenAI API.

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gpt-realtime-mini: Voice Model for Real-Time AI Interaction

In addition, OpenAI introduced gpt-realtime-mini, a lightweight real-time voice model that enables instant, conversational interactions. Altman emphasized that this model marks a shift toward making “real-time AI conversation the primary way people interact with AI.”

2. Sora 2: The Future of AI-Generated Video

Another major reveal was Sora 2, OpenAI’s upgraded AI video generation model. The new version brings:

- Realistic soundscapes

- Synchronized audio

- Enhanced motion realism

Sora 2 is now available via API, allowing developers and creators to build rich multimedia experiences with lifelike audio-visual integration. This positions Sora 2 as a powerful tool for content creation, marketing, and storytelling.

3. OpenAI Expands Developer Ecosystem with New Tools

AgentKit and App SDK for AI seamlessly integration

To arm developers, OpenAI unveiled a set of new tools that were designed to remove the barriers to developing apps with AI underneath:

AgentKit: A tool for developers to design, deploy intelligent agents in a few minutes.

App SDK: Allows ChatGPT-like capabilities to be easily added into apps like Canva and Spotify.

ChatKit: Weaving ChatGPT into Your Own Apps

Another key highlight was ChatKit, a toolkit for developers to integrate chat interfaces powered by ChatGPT directly into their products, making it simpler than ever before to bring conversational AI into everyday applications.

4. New Partnerships: OpenAI x AMD

OpenAI also said it has struck a multi-year deal with AMD to grow its compute infrastructure.

Altman and OpenAI President Greg Brockman both admit that while the company has heavily ramped up its capabilities, compute capacity is a roadblock — and the collaboration with AMD will help turbocharge OpenAI’s AI work over time.

5. Jony Ive Discusses AI-Driven Hardware

The legendary former Apple design chief Jony Ive made a rare and much-anticipated appearance onstage with Sam Altman. I’ve enlightened you about their continuing partnership on AI-imbued hardware, with the goal of developing products that render technology more human, peaceful and emotionally balanced.

The speed of AI innovation is incredible, and overwhelming, he said:

“The rapid progress often makes it difficult to stay focused,” Ive remarked, emphasizing the importance of designing technology that enhances well-being.

6. ChatGPT’s Massive User Base and Platform Growth

During the event, Sam Altman revealed new usage milestones for OpenAI’s products:

- 800 million weekly active users

- 4 million developers building on the platform

- 8 billion tokens processed per minute via API

These numbers underscore OpenAI’s massive size and worldwide presence, as its tools have become core to how people and companies use AI.

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7. Market Impact: Partner Companies See Stock Surges

The market’s response to OpenAI’s news was swift. Stocks of companies featured as OpenAI integration partners — such as HubSpot, Figma and Coursera — rose after the DevDay livestream, suggesting that investors were bullish on a growing AI ecosystem.

8. OpenAI’s Roadmap: Innovation Over Profitability

Altman wrapped up the event by emphasising that OpenAI’s focus is expansion and breakthroughs, instead of immediate profit.

“Our mission remains to build AI that benefits humanity, and that means prioritizing growth and innovation over short-term profits,” Altman stated.

Key Takeaway: OpenAI’s Bold Vision for the Future

From our maxed-out GPT-5 Pro, to Sora 2, and Jony Ive’s vision of human-centred hardware DevDay showed a company leading the world in AI. As the developer ecosystem expands, global partnerships ensue, and a billions-strong user base access and benefit from OpenAI’s knowhow, the company – once again - delivers on driving in the direction of next generation AI experiences.