OpenAI Realtime API Next.js

Openai Realtime Api Nextjs

Last updated October 8, 2025

About This Template

OpenAI Realtime API Next.js is a comprehensive starter template built with Next.js 15, TypeScript, OpenAI Realtime API, WebRTC, Tailwind CSS, shadcn/ui, and Framer Motion, designed for building Voice AI applications with real-time voice interaction capabilities and advanced tool-calling features. This robust framework provides WebRTC-based voice AI streaming for low-latency audio, Next.js server-side rendering for optimal performance, modern UI with smooth animations via Framer Motion, abstracted WebRTC handling through custom React hooks, six example tool-calling functions demonstrating capabilities like getCurrentTime, partyMode, and changeBackground, and multilingual support for English, Spanish, French, and Chinese with strict TypeScript checking ensuring type safety. Supporting both Deno and Node.js runtimes and deployable to Vercel with one-click setup, the template emphasizes ease of use and developer experience while enabling sophisticated voice AI interactions. Perfect for customer service applications with voice-based support, accessibility tools enabling voice control, educational platforms with conversational tutoring, productivity applications supporting voice commands, or any interface where voice interaction provides more natural engagement than traditional text inputs. The custom hook abstraction simplifies WebRTC complexity, enabling developers to focus on application logic and AI capabilities rather than connection management and audio streaming protocols, while the example tool-calling functions demonstrate how voice AI can trigger application actions, creating interactive experiences that respond to user speech in real-time.

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