OpenAI Unveils GPT-5 Pro, Sora 2, and Voice AI Upgrades to Empower Developers at Dev Day 2025
OpenAI has rolled out a suite of powerful new models and developer tools at its annual Dev Day 2025, signaling a major expansion of its artificial intelligence ecosystem. Among the highlights are GPT-5 Pro, the company’s most advanced language model yet; Sora 2, an upgraded video generation model; and GPT-Realtime mini, a smaller, cost-effective voice AI. The announcements aim to strengthen OpenAI’s position as the go-to platform for developers and creators building next-generation AI applications.
According to OpenAI CEO Sam Altman, GPT-5 Pro delivers higher accuracy and deeper reasoning, making it ideal for sectors that demand precision, such as finance, healthcare, and law. The model is designed to handle complex queries and domain-specific tasks with greater efficiency, helping developers build more capable and reliable AI-driven solutions. OpenAI is also introducing new agent-building tools and the ability to develop apps directly within ChatGPT, offering a seamless integration experience for coders and startups.
In a move to make voice interactions more accessible, OpenAI launched GPT-Realtime mini, a smaller yet expressive voice model optimized for low-latency audio and speech processing. Altman highlighted that the new model is 70% cheaper than its predecessor while maintaining comparable sound quality and emotional expressiveness. He emphasized that voice will soon become a primary mode of communication with AI, as natural speech-based interactions gain mainstream adoption.
Developers and creators can now experiment with Sora 2, OpenAI’s latest video and audio generator, which is available in preview via the API. The tool produces cinematic, physically consistent scenes with synchronized sound and allows for enhanced creative control — from dynamic camera angles to stylistic visual effects. Sora 2 also powers the Sora app, a TikTok-style platform where users can generate short AI videos of themselves or imagined scenes using text prompts.
Altman revealed that Sora 2’s versatility has already attracted major brands like Mattel, which plans to use it for concept development and design visualization. From generating ad visuals to transforming toy sketches into 3D concepts, OpenAI’s latest tools are redefining how businesses and creators bring ideas to life. With GPT-5 Pro’s reasoning depth, Sora 2’s creative potential, and GPT-Realtime mini’s affordability, OpenAI is positioning itself at the forefront of the next wave of AI innovation.
source: techcrunch