RealtimeTTS

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RealtimeTTS is an open-source audio & music tool that converts text to speech in real-time. It offers low-latency, high-quality auditory output compatible with LLM outputs.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is RealtimeTTS?

RealtimeTTS is a state-of-the-art, open-source text-to-speech (TTS) library engineered for real-time applications. It excels in converting text streams into high-quality, natural-sounding speech with minimal latency, making it ideal for interactive and dynamic voice applications. The library supports a wide array of TTS engines, including OpenAI TTS, Elevenlabs, Azure Speech Services, Coqui TTS, StyleTTS2, Piper, and many more, offering flexibility and choice. It also features a robust fallback mechanism to ensure continuous operation, switching to alternative engines in case of disruptions. RealtimeTTS is designed for easy integration and customization, providing various installation options to suit different use cases and engine requirements.

Best used for

Ideal for developers and technical users who need to implement real-time text-to-speech in their applications, integrate various TTS engines, and ensure continuous audio output. Especially valuable for building interactive AI assistants and voice-controlled systems requiring low latency.

Common actions

convert text to speech

generate audio streams

integrate TTS engines

create voice interfaces

deepfakeopen-sourceautomated workflowworkflowslow-code/no-codecollaboration"AI Agents"github copilotface swapping

Capabilities

Key features

Low-latency TTS conversion
High-quality audio output
Multiple TTS engine support
Multilingual capabilities
Robust fallback mechanism
Voice cloning via WAV files
Sentence boundary detection

Target Audience

developersai/ml engineersgame developersresearchers

Integrations

openaielevenlabsazure

Pricing & Plans

Open Source

Free

FAQs

What TTS engines does RealtimeTTS support?

RealtimeTTS supports a wide range of engines including OpenAI TTS, Elevenlabs, Azure Speech Services, Coqui TTS, StyleTTS2, Piper, gTTS, Edge TTS, Parler TTS, Kokoro, Cartesia, Faster Qwen 3, NeuTTS, PocketTTS, Modelslab, CAMB AI, MiniMax, and System TTS.

Does RealtimeTTS require an internet connection?

Some engines, such as OpenAI, Elevenlabs, Azure, CAMB AI, MiniMax, Cartesia, and Modelslab, require an internet connection. However, local processing engines like Coqui TTS, StyleTTS2, Piper, Parler TTS, System TTS, ZipVoice, PocketTTS, NeuTTS, and FasterQwen do not.

How do I install RealtimeTTS with all dependencies?

To install RealtimeTTS with support for all TTS engines, you should use the command `pip install -U realtimetts[all]`. This ensures all necessary dependencies are included for full functionality.

Can RealtimeTTS perform voice cloning?

Yes, RealtimeTTS supports voice cloning through engines like PocketTTS, which offers cloning via WAV files, and NeuTTS, which provides on-device voice cloning with a 3-second reference audio sample.

What are the system requirements for RealtimeTTS?

Specific requirements vary by engine. For example, some engines like Coqui TTS may need 4-5 GB VRAM for real-time performance, and others like ParlerEngine require flash attention. Installation of `portaudio` is also necessary for audio output.

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