> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.empiriolabs.ai/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.empiriolabs.ai/_mcp/server.

# Inworld

> 4 Inworld models on EmpirioLabs, callable through one OpenAI-compatible API with shared billing and logs.

![Inworld](/_fern-img/396ee2494fca31fbc2380eeb20f663879e157ab79962f6da300d76e7645a2faf.webp)

## Inworld

## Models from Inworld

![TTS 2 Flash](https://media.empiriolabs.ai/model-logos/tts-2-flash.png)

[TTS 2 Flash](/models/tts-2-flash)

Latency-first realtime voice synthesis holding one voice identity across 200+ languages, tuned for high-volume streaming workloads.

![TTS 2](https://media.empiriolabs.ai/model-logos/tts-2.png)

[TTS 2](/models/tts-2)

Realtime voice model that takes plain-English delivery direction, holds one voice identity across 200+ languages, and streams with word timestamps.

![TTS 1.5 Mini](https://media.empiriolabs.ai/model-logos/tts-1-5-mini.png)

[TTS 1.5 Mini](/models/tts-1-5-mini)

Sub-130ms TTFB voice synthesis with 271+ voices across 15 languages, expressive prosody, and real-time SSE streaming for low-latency voice agents.

![TTS 1.5 Max](https://media.empiriolabs.ai/model-logos/tts-1-5-max.png)

[TTS 1.5 Max](/models/tts-1-5-max)

Broadcast-quality voice synthesis with rich expressive prosody, 271+ voices across 15 languages, and real-time SSE streaming with per-word timestamps.