OpenAI has intensified its focus on developers with a series of major updates unveiled at its Dev Day, introducing more powerful models, new tools, and expanded capabilities across its API ecosystem. Among the highlights is GPT-5 Pro, the latest iteration of its flagship language model, designed for high-accuracy, complex reasoning tasks in demanding fields like finance, legal, and healthcare. OpenAI CEO Sam Altman emphasized that GPT-5 Pro is built for applications requiring deep analytical thinking and precision, making it ideal for enterprise and professional use cases. The model is part of a broader strategy to attract developers by offering advanced tools that support sophisticated AI applications. In addition to GPT-5 Pro, OpenAI launched “gpt-realtime mini,” a smaller, more cost-effective voice model available through the API. The new model delivers the same high voice quality and expressiveness as its predecessor but at 70% lower cost, enabling low-latency, real-time audio interactions. Altman highlighted that voice is becoming a central mode of human-AI interaction, and this update makes advanced voice capabilities more accessible to developers building conversational applications. Another key announcement was the preview release of Sora 2, OpenAI’s next-generation video generation model, now available via the API. Sora 2 builds on the original Sora with enhanced realism, improved physical consistency, and richer creative control. Developers can now generate videos with detailed camera movements, stylized visuals, and synchronized soundscapes—going beyond just spoken dialogue to include ambient audio, effects, and immersive sound environments. Altman demonstrated the model’s capabilities by showing how a simple iPhone-style video clip could be transformed into a sweeping cinematic sequence through a prompt. He also highlighted a practical use case: a Mattel designer using Sora 2 to turn a hand-drawn sketch into a dynamic toy concept video, underscoring OpenAI’s collaboration with the Barbie maker to integrate generative AI into product design workflows. Alongside the model updates, OpenAI introduced a new agent-building tool that simplifies the creation of autonomous AI agents capable of handling complex, multi-step tasks. Developers can now also build custom apps directly within ChatGPT, expanding the platform’s utility beyond chat-based interactions. These updates reflect OpenAI’s growing emphasis on empowering developers to build innovative, scalable applications. By providing access to cutting-edge models like Sora 2 and GPT-5 Pro, along with cost-efficient tools like gpt-realtime mini, OpenAI aims to solidify its position as a foundational platform for the next generation of AI-powered products.