GPT Realtime 2

GPT Realtime 2 is a web-based tool that converts text into spoken audio. You type a prompt, choose from six different AI voices, and get a playable audio file in seconds. It works through a simple browser interface that requires no account to start testing, making it easy to hear how your text sounds before committing to any service.

The tool stands out by offering immediate feedback. It streams both the audio and a text transcript of what was spoken. Under the hood, it connects to OpenRouter's infrastructure, specifically using the 'openai/gpt-audio' model to generate the speech. For developers, it provides a clean API endpoint that handles the complexity of API keys server-side, returning a JSON response with the audio data ready to be used in other applications.

This tool is most useful for developers and product teams who need to quickly prototype voice features or add audio feedback to their apps. Content creators can use it to draft voiceovers or podcast intros. Its straightforward, no-fuss approach removes the initial sign-up barrier, letting you focus on testing the audio output itself.