Powering the Next Wave
of AI Applications

Get Started Contact Sales

Status reached 1M DAUs in 19 days.

OtherHalf powers voice-first companions at scale.

Ongoing, personal, emotionally engaging AI interaction. Build for relationship-building, emotional connection, and entertainment at scale.

Inworld TTS

The fastest, highest-quality voice AI

#1 on Artificial Analysis. Purpose-built for realtime conversation with sub-200ms latency, at a fraction of the cost of other providers.

Get Started View Docs

Inworld Router

One API. The best model for every user and context.

Route requests across OpenAI, Anthropic, Google, and 200+ models through a single API. Built-in failover, A/B testing, and automatic model selection with no code changes required.

Get Started View Docs

Compatible with OpenAI and Anthropic SDKs

from openai import OpenAI

client = OpenAI(
    base_url="https://api.inworld.ai/v1",
    api_key="YOUR_INWORLD_API_KEY",
)

response = client.chat.completions.create(

    model="openai/gpt-5.2",

    messages=[{"role": "user", "content": "Hello"}],
)

Use it with+ many more

Top Models

Live

1Gemini 3 Flash16%

2Qwen3 Max14%

3Claude Sonnet 4.612%

4Claude Opus 4.612%

5Grok 4.1 Fast10%

6Gemini 2.5 Flash5%

7GPT 5.25%

8Kimi K2.53%

9MiniMax M2.53%

10Gemini 2.5 Flash Lite2%

Inworld Realtime API

Realtime Speech-to-Speech

Low-latency, natural speech-to-speech experiences via one API. Built-in multimodal capabilities, function calling and turn taking.

Get Started View Docs

Ultra-low latency

Optimized pipeline delivers Full-duplex audio streaming over a single WebSocket or WebRTC connection.

Provider agnostic

Route to the model that fits your latency, cost, or quality requirements.

Semantic VAD

Context-aware turn detection with adjustable eagerness.

Function calling

Models can invoke tools and APIs mid-conversation for dynamic responses.

Dynamic context management

Create, retrieve, delete, or truncate conversation items mid-session to control context length and token cost.

Multimodal

Send and receive text, audio, or both simultaneously. Switch modalities per response.

Security

Build with confidence on secure AI infrastructure

Enterprise-grade security and compliance built into our AI platform. Built on a zero-trust framework with continuous monitoring, providing a secure foundation for teams building the next generation of AI.