AI Apps

/

Unreal Speech

Unreal Speech

Ultra-fast, scalable text-to-speech API

AI Voice Changers

Unreal Speech is a developer-focused, high-performance text-to-speech (TTS) API platform designed for real-time and large-scale voice AI applications. Built for engineers, product teams, and AI researchers, Unreal Speech delivers ultra-low latency (as low as 0.3 seconds), high concurrency, and cost-effective pricing—making it ideal for voice AI use cases that demand both speed and scalability. The platform supports 48 voices across 8 languages, with flexible endpoints for synchronous and asynchronous audio generation, and per-word timestamping for precise audio-text alignment.

Unreal Speech's core technical value proposition is its ability to generate natural-sounding speech at a fraction of the cost of competitors like ElevenLabs, Amazon Polly, and Google, while maintaining high uptime (99.9%) and supporting advanced developer workflows. With robust API documentation, SDKs, and real-time streaming capabilities, Unreal Speech empowers developers to build next-generation voice AI products, from conversational agents to long-form content narration, with seamless integration into any stack.

QUICK FACTS

Tool Name

Unreal Speech

Website

https://unrealspeech.com/

Category

AI Voice Changers

Primary Use Case

Real-time and batch text-to-speech synthesis for voice AI applications, including conversational AI, content narration, and telephony.

API Availablity

Comprehensive REST API and WebSocket streaming endpoints available. SDKs for Python, Node.js, and React Native.

Typical Users

AI developers, SaaS product teams, conversational AI startups, media platforms, accessibility solution providers, and telephony integrators.

Pricing Model

Free tier available; paid plans start at $16 per 1M characters, with volume discounts down to $8 per 1M characters for enterprise.

What

Unreal Speech

Does

Unreal Speech operates as a high-speed, developer-friendly TTS engine that fits seamlessly into STT (speech-to-text) → LLM (large language model) → TTS (text-to-speech) pipelines. Developers can send text to the API, select from a range of voices and languages, and receive high-quality audio streams or files in real time or asynchronously. The platform supports per-word and per-sentence timestamping, enabling precise audio-text synchronization for interactive and accessibility-focused applications.

Developers typically build:

- Conversational AI agents and virtual assistants

- Real-time voice bots for customer support

- Audiobook and long-form content narration

- Accessibility tools (screen readers, voice overlays)

- Telephony and IVR (interactive voice response) systems

- Voice-enabled media and podcast platforms

Key Features

Ultra-Low Latency Streaming

Stream audio in as little as 0.3 seconds, enabling real-time conversational AI and instant feedback applications.

Scalable Long-Form Synthesis

Generate up to 10 hours of audio per request with asynchronous endpoints, supporting high-volume content production and batch processing.

Per-Word Timestamps & Highlighting

Receive precise word- or sentence-level timestamps for every audio file, allowing for accurate text-audio alignment and interactive highlighting.

Multi-Language & Multi-Voice Support

Access 48 voices across 8 languages, including English, Mandarin, Hindi, Spanish, Portuguese, Japanese, French, and Italian.

Flexible API & SDK Integrations

REST and WebSocket APIs, plus SDKs for Python, Node.js, and React Native, make integration into any tech stack straightforward and efficient.

Common Use Cases

Conversational AI & Chatbots

Power real-time, natural-sounding voice agents for customer support, sales, and virtual assistant applications.

Audiobook & Content Narration

Automate the creation of high-quality audiobooks, news, and blog narration at scale.

Accessibility Solutions

Integrate TTS into screen readers and assistive technologies for visually impaired users, with precise word highlighting.

Multi-Language & Multi-Voice Support

Deploy scalable, dynamic voice prompts and responses in call centers and automated phone systems.

Voice-Enabled Media Platforms

Add instant voice playback to articles, podcasts, and video platforms for enhanced user engagement.

Voice-Enabled Media Platforms

Add instant voice playback to articles, podcasts, and video platforms for enhanced user engagement.

Alternatives

Smallest AI

recommended

Go-to

Visit

AGI agents under 10B parameters for ultra-fast, accurate speech and text conversations. 

Scale to billions of enterprise interactions with minimal latency

Voicemod

Visit

Real-Time AI Voice Changer Platform

Altered.ai

Visit

Real-Time Voice Cloning and AI Speech

Voice.ai

Visit

Real-time Voice AI for Developers

Frequently Asked Questions

What is Unreal Speech's pricing model?

Unreal Speech offers a free tier and paid plans starting at $16 per 1M characters, with volume discounts for higher usage. Enterprise customers can access rates as low as $8 per 1M characters.

How fast is Unreal Speech's API?

The API delivers audio streams in as little as 0.3 seconds for short requests, supporting real-time applications and high concurrency workloads.

Which languages and voices are supported?

Unreal Speech provides 48 voices across 8 languages, including US/UK English, Mandarin, Hindi, Spanish, Portuguese, Japanese, French, and Italian.

Does Unreal Speech support per-word timestamps and highlighting?

Yes, developers can receive per-word or per-sentence timestamps via API or WebSocket, enabling precise audio-text synchronization and interactive word highlighting.

Build voice AI with Smallest.ai

Ultra-low latency APIs for real-time voice agents. Free credits, no credit card required.

Start Free

Book a Demo

Modify voices in n8n workflows

Use in n8n cloud

Voice Changers API from your dashboard

Ultra-low latency APIs for real-time voice agents. Free credits, no credit card required.

Start Building

Book a Demo

ON THIS PAGE

  • Introduction

  • What it does

  • Key Features

  • Use Cases

  • Alternatives

  • FAQs