Inworld TTS

Inworld TTS

Inworld
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About

Async is a developer-first AI voice platform, rooted in technology that powers Podcastle, offering premium text-to-speech and voice cloning via a simple, high-performance API. Developers gain access to broadcast-quality, natural-sounding voices with under-200 ms latency, and can create personalized voice clones using just a three-second audio sample. It supports streaming output so audio plays as it’s generated, and offers transparent usage-based billing with real-time daily stats and per-second cost control. Built to scale from prototypes to full production, Async makes advanced voice capabilities accessible to indie developers and enterprises alike, backed by the same trusted infrastructure that fueled Podcastle.

About

Inworld TTS is a state-of-the-art text-to-speech platform designed to deliver ultra-realistic, context-aware speech synthesis and precise voice-cloning capabilities at a radically accessible price. The flagship model, TTS-1, is optimized for real-time applications and supports low-latency streaming (first audio chunk in ≈200 ms) as well as multiple languages (including English, Spanish, French, Korean, Chinese, and more). Developers can use instant zero-shot voice cloning (5-15 seconds of audio) or professional fine-tuned cloning, add voice-tags for emotion, style, and non-verbal sounds, and switch languages while preserving voice identity. The larger TTS-1-Max model (in preview) offers even more expressive speech and multilingual strength. The platform supports both API and portal access, streaming or batch mode, and is designed for everything from interactive voice agents and gaming characters to branded audio experiences.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Developers wanting a tool to get natural voice generation and cloning for apps

Audience

Developers and businesses looking for a tool offering multilingual voice synthesis and custom-voice cloning at scale

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$1 per hour
Free Version
Free Trial

Pricing

$0.005 per minute
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Async
United States
async.ai/

Company Information

Inworld
Founded: 2021
United States
inworld.ai/tts

Alternatives

Alternatives

Qwen3-TTS

Qwen3-TTS

Alibaba
Fish Audio

Fish Audio

Hanabi AI
Chirp 3

Chirp 3

Google
Fish Audio

Fish Audio

Hanabi AI

Categories

Categories

Integrations

Claude
Fireworks AI
Google AI Overviews
Groq
Inworld
JavaScript
LiveKit
Mistral AI
OpenAI
Podcastle
Python
Tenstorrent DevCloud
Twilio
Vapi AI
gpt-oss-20b

Integrations

Claude
Fireworks AI
Google AI Overviews
Groq
Inworld
JavaScript
LiveKit
Mistral AI
OpenAI
Podcastle
Python
Tenstorrent DevCloud
Twilio
Vapi AI
gpt-oss-20b
Claim Async and update features and information
Claim Async and update features and information
Claim Inworld TTS and update features and information
Claim Inworld TTS and update features and information