GPT Realtime 2
What is GPT Realtime 2?
GPT Realtime 2 is an AI-powered platform designed for instant, natural-sounding audio generation and text-to-speech (TTS) services. It provides a no-registration playground where users can transform text into speech using various AI voices like Alloy, Echo, and Shimmer. For developers, it offers a production-ready API route via OpenRouter, specifically utilizing the openai/gpt-audio model. The system supports streaming audio responses, transcript feedback, and multiple output formats, making it a comprehensive tool for building voice-enabled applications and workflows.
How to use GPT Realtime 2?
To use GPT Realtime 2, enter a text prompt in the playground, select one of the six AI voices (such as Alloy or Nova), and choose your output format. Click 'Generate Audio' to hear the result. Developers can integrate the service by configuring an OPENROUTER_API_KEY in their server environment and sending POST requests to the /api/generate endpoint with prompt, voice, and format parameters.
GPT Realtime 2's Core Features
Instant AI audio generation with natural-sounding voices
Six distinct AI voices with human-like intonation and emotion
Streaming audio responses through OpenRouter API
No-registration browser playground for testing
Developer-ready REST API with JSON responses containing transcripts and base64 audio
Support for WAV format and PCM16 SSE chunks
GPT Realtime 2's Use Cases
Voice prototyping for product copy and onboarding scripts
Generating spoken answers for customer support and chat flows
Creating narration drafts for podcasts and short-form voiceovers
Building realtime agents that require streamed transcript and audio output
Creative testing of voice, tone, and pacing before full production
FAQ from GPT Realtime 2
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GPT Realtime 2 Pricing
Demo
$0
Quick browser tests, prompt to transcript demo, no account gate.
OpenRouter Production
Usage-based
Real audio generation billed by your configured OpenRouter account and model route.
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