GPT Realtime 2 | AI Audio Generation & Text-to-Speech

Overview

Instant, natural-sounding AI audio. Try GPT-Realtime-2 text-to-speech free in your browser. Developer-ready API via OpenRouter.

Transform text into natural-sounding speech with a no-registration playground. GPT-Realtime-2 streams transcript and audio responses through an OpenRouter-ready API route.

GPT-Realtime-2 is useful wherever teams need fast speech generation, transcript feedback, and a clear path from playground test to API integration.

Key Features

• GPT Realtime 2: Instant AI Audio Generation
• Audio Playground
• Natural voices
• Instant generation
• Developer ready
• Build audio workflows around GPT Realtime 2.
• Voice prototypes
• Support audio
• Narration drafts
• Realtime agents
• Try GPT Realtime 2 instantly — no registration required
• Six distinct AI voices with human-like intonation and emotion.

Details

The landing page stays honest in demo mode and becomes a real OpenRouter audio generator as soon as the production environment receives the private API key.

The public UI talks to a server route that keeps the OpenRouter key private. The route returns transcript, base64 audio, MIME type, provider, model, and demo state.

POST /api/generate { "prompt": "Welcome to GPT Realtime 2.", "voice": "alloy", "format": "wav" } Private key handlingSet OPENROUTER_API_KEY only in local or Vercel environment variables. It is never needed in browser code.