FireRedTTS3

FireRedTTS3 is a unified speech generation and editing system that performs zero-shot voice cloning, instruction-controlled voice design, and speech editing.

FireRedTTS3 is a unified speech generation and editing system built on semantically enriched continuous speech representations. It is designed for developers and researchers who need multi-dialect and multilingual text-to-speech capabilities. The system features two variants: FireRedTTS3-Base for zero-shot voice cloning across 24 languages and 21 Chinese dialects, and FireRedTTS3-Instruct for natural-language voice design and free-form speech editing. It supports both semantic edits like insertion, deletion, and substitution, as well as acoustic edits controlling speed, pitch, and volume. The platform provides Python APIs, a Gradio demo interface, and integrates with Hugging Face and ModelScope for model downloads.

FireRedTTS3 at a glance

Best for: Software engineer
Runs on: Web, API, self-hosted, open source
Pricing: Free
Released: August 2026
Category: AI audio tool
Website: github.com/fireredteam/fireredtts3

Key features

Zero-shot voice cloning across 24 languages
Zero-shot voice cloning across 21 Chinese dialects
Instruction-controlled voice design from natural-language descriptions
Free-form semantic speech editing for insertion, deletion, and substitution
Acoustic speech editing for speed, pitch, and volume
Python API for model integration
Gradio demo interface

Use it for

Cloning voices across multiple languages and Chinese dialects
Designing new voices using natural-language instructions
Performing semantic speech editing like insertion and deletion
Adjusting acoustic attributes like speed, pitch, and volume

Alternatives to FireRedTTS3

FireRedAudio — A unified model handling understanding and generation with decoupled continuous representations.
MOSS-TTS — Delivers zero-shot voice cloning and fine-grained pronunciation control.
RealtimeTTS — Provides low-latency speech synthesis with a broad engine matrix and multiple backends.
Kokoro-FastAPI — Generate hours of high quality speech with an OpenAI-compatible endpoint.
kokoro-onnx — Runs local TTS inference with efficient ONNX runtime performance.
Pipecat — Builds real-time voice and multimodal agents with frame-level control.
ESPnet — Provides reproducible recipes and hundreds of pretrained models for various speech tasks.
TTS WebUI — It offers a free web interface with over 30 AI models for audio generation.
Astrbot Plugin Feiyu Voice — It offers custom voice lines, RVC voice conversion, and song generation via a unified API.
Moonshine — Runs entirely in your browser with no audio leaving your device.
WeNet — Achieves state-of-the-art results on public speech datasets.
Piper — Runs locally and offers fast neural text-to-speech synthesis.

All FireRedTTS3 alternatives