Inworld: Voice AI Platform for Realtime Applications
Inworld helps software companies develop voice-first agents and companions. It is designed for teams requiring low-latency audio streaming and compliance standards like HIPAA and GDPR.
At a glance
- Category
- Software Development
- Best for
- Software Companies, AI Developers, App Developers
- Pricing
- Inworld uses usage-based pricing. The TTS-1.5 Mini tier is $5 per million characters, and the Max tier is $10 per million characters; LLM and Realtime API costs are based on the underlying model usage.
- Key use cases
- Realtime Voice Companions, Educational Tools, Health Applications, Interactive Media Agents
- Official website
- www.inworld.ai/
Inworld is a developer-focused voice AI platform designed to support the creation of realtime, interactive voice experiences. It provides a suite of tools including a Text-to-Speech engine with sub-200ms latency, Speech-to-Text capabilities, and a router that allows developers to access over 220 different LLM models.
The platform is intended for software developers creating voice-first companions, educational tools, or health applications. It supports full-duplex audio streaming to help interactions feel more natural.
For business buyers, the platform includes security features such as SOC 2 Type II certification and zero-data retention options. This may be a fit for industries with strict data privacy requirements.
Buyers should confirm their specific latency needs and review the usage-based pricing to ensure the model costs align with their project budget.
Key Features
Provides voice synthesis with sub-200ms latency and options for voice cloning.
An API that routes requests across 220+ LLM models from providers such as OpenAI, Anthropic, and Google.
Offers semantic speech recognition and bidirectional streaming over WebSocket for live audio transcription.
Supports full-duplex audio streaming and intelligent turn-taking to manage conversational flow.
Allows assistants to call registered tools mid-session without interrupting the audio stream.
Includes SOC 2 Type II certification and is designed for HIPAA and GDPR compliance.
Use Cases
Building AI companions designed for relationship-building and emotional connection.
Creating voice-first learning applications that provide interactive tutoring.
Developing voice agents for health-related services using HIPAA compliance.
Developing agents for entertainment and interactive media that require low-latency responses.
Best For
Pricing
Inworld uses usage-based pricing. The TTS-1.5 Mini tier is $5 per million characters, and the Max tier is $10 per million characters; LLM and Realtime API costs are based on the underlying model usage.
FAQ
Inworld uses a usage-based credit system where TTS is billed per million characters and LLM usage is billed at the provider's cost with no markup.
Yes, the platform is designed for health applications and supports HIPAA compliance.
The LLM Router provides access to over 220 models from providers including OpenAI, Anthropic, Google, Mistral, and xAI.
Source category: Software Development
Source subcategory: Voice AI
