OpenAI has unveiled its “most capable” speech-to-speech AI model, GPT-Realtime, on August 28, 2025. This cutting-edge model excels at producing natural and expressive speech, effectively interpreting complex instructions. According to the company blog, GPT-Realtime can seamlessly switch languages and tones mid-sentence, making it ideal for diverse applications. It captures non-verbal cues such as laughter and can process numbers in multiple languages, including Spanish, Chinese, Japanese, and French. OpenAI emphasizes that the model was developed in collaboration with customers to enhance real-world tasks like customer support, personal assistance, and education. Additionally, the Realtime API is now available to the public, featuring new voices named Cedar and Marin. This advancement positions GPT-Realtime as a vital tool for developers in creating responsive voice agents, aligning with modern demands in technology and communication. Stay updated on AI innovations that redefine user interaction and performance in various sectors.
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