OpenAI Launches Realtime API at DevDay

OpenAI has launched a public beta of its Realtime API, enabling developers to create immersive voice applications with seamless voice interactions, based on GPT-4o. This API allows for speech-to-speech conversations and is priced at $100 per million audio input tokens and $200 per million audio output tokens. OpenAI's recent developer event showcased this tool along with features like model distillation and prompt caching to optimize performance and reduce costs. The company is expanding the use of its voice technology to third-party developers for applications such as health coaching and language learning. These developments are part of OpenAI's strategy to maintain a competitive edge in the AI market and increase its revenue as it seeks substantial new funding. Concerns about realistic AI voice synthesis remain, particularly regarding potential misuse that could mislead or spam users.