Unreal Speech

Unreal Speech is a text-to-speech API designed for speed and cost efficiency. It enables developers to integrate speech synthesis into applications with low latency (0.3s for short streams) and support for long-form audio (up to 10 hours per request). The API offers multiple endpoints for different use cases: /stream for instant audio up to 1,000 characters, /speech for synchronous synthesis up to 3,000 characters, /synthesisTasks for asynchronous long-form generation up to 500,000 characters, and /streamWithTimestamps for real-time word-level timestamps via WebSocket.

Key Features

• Low latency: Stream audio in 300ms.
• High volume: Request up to 10-hour audio in 15 minutes.
• Per-word timestamps: Highlight words in sync with speech.
• : 48 voices across 8 languages (US English, UK English, Mandarin Chinese, Hindi, Spanish, Portuguese, Japanese, French, Italian).