What are Inworld credits?

Credits are a dollar-denominated balance used to pay for usage across all products. Paid plans include monthly credits equal to the plan's cost (e.g., $300 for the Developer plan).

Do unused credits roll over?

Yes, unused subscription credits automatically roll over for up to 3 months, provided you maintain an active subscription of equal or higher value.

How fast is the Inworld TTS response?

Inworld offers sub-second latency, with the Realtime TTS-2 and 1.5 Max models typically delivering audio in under 250ms, while the Mini model can reach under 130ms.

Is Inworld compatible with other LLMs?

Yes, through the Inworld Router, you can use a single API to connect to hundreds of models from providers like OpenAI, Anthropic, and Google.

Does Inworld support voice cloning?

Yes, it supports instant voice cloning from as little as 15 seconds of reference audio, as well as professional-grade cloning and text-based voice design.

Is Inworld secure for enterprise use?

Inworld is SOC 2 Type II certified and offers HIPAA and GDPR compliance, including options for zero data retention and on-premise deployment.

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Text to speech

Freemium

Inworld

Top-ranked realtime voice AI platform featuring sub-250ms latency TTS, emotional steering, and cross-lingual voice cloning for gaming, companions, and enterprise voice agents.

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Rating

Reviews

Upvotes

3 months ago

Listed

Text to speech

Voice Cloning

Speech to Speech

AI Characters

Gaming

Conversational AI

Real-time API

Voice Agents

Tool information

Provider

Inworld AI

Platforms

Web

API

Unity

Unreal Engine

Node.js

Python

Languages

English

Spanish

French

German

Japanese

Korean

Chinese

Hindi

Arabic

Portuguese

Italian

Dutch

Polish

Russian

Hebrew

API Available

Yes

Added to directory

3 months ago

Last updated

about 1 month ago

Rating

Not available

Pricing

Freemium

About Inworld

What the tool does and who it's for

Inworld AI provides a vertically-integrated stack for realtime voice AI, specializing in high-fidelity Text-to-Speech (TTS), Speech-to-Text (STT), and conversational orchestration. Ranked #1 for quality on the Artificial Analysis leaderboard, its Realtime TTS-2 model offers sub-250ms latency, advanced emotional steering via natural language tags, and cross-lingual voice cloning. The platform is designed for enterprise-grade applications including AI companions, gaming NPCs, and voice-first customer support agents, featuring a 'Router' that connects to over 200 LLMs from OpenAI, Anthropic, and Google. With a focus on performance and cost-efficiency, Inworld supports over 100 languages and provides flexible deployment options including hosted cloud and on-premise solutions.

Key capabilities

Realtime TTS-2 with sub-250ms latency for natural, lag-free conversations.

Advanced Emotional Steering using inline bracketed instructions for tone and speed.

Cross-lingual Voice Cloning: create a voice in 15 seconds and speak in 100+ languages.

Inworld Router: Dynamically route requests to 200+ LLMs like GPT-4o, Claude, and Gemini.

Integrated STT with voice profiling (emotion, accent, and age detection).

Flexible deployment options including Hosted Cloud, VPC, and On-premise.

Semantic turn-taking and interruption handling for fluid voice interactions.

Text-based Voice Design: generate unique voices from natural language descriptions.

Pricing

Freemium — plans below

On-Demand

Free to start

Up to 40 min TTS included
5 custom voices
Voice cloning & voice design
Realtime API access
220+ LLM models via Router
Community support

Creator

$25/mo

$25 in credits per month
100 custom voices
Audio downloads
40K chars per TTS Playground request
Workspace creation & sharing
Everything in On-Demand

Developer

Enterprise

Contact sales

SLA & DPA
On-premise deployment
EU & India data residency
Dedicated Account Manager
Custom limits
Zero Data Retention (ZDR)

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