# LiveKit Inference adds AssemblyAI's assemblyai-tts-1 text-to-speech model

> Original title: There’s a new TTS model on LiveKit Inference: assemblyai-tts-1, the first text-to-speech model from @AssemblyAI

- Source: LiveKit
- Published: 2026-10-28T18:10:41.000Z
- Bad Influence: https://badinfluence.news/items/on6g81eak9ijb3dw21k4d47j6
- Original: https://x.com/livekit/status/2115506552597823818

## Summary

LiveKit Inference now offers assemblyai-tts-1, the first text-to-speech model from AssemblyAI. The model streams first audio in about 90 ms, offers 4,000+ voices, and supports English, Spanish, French, German, Italian, and Portuguese, costing $15 per 1M characters.

## Why it matters

The post gives concrete latency, language, pricing, and access details for a voice agent TTS model, useful for comparing it with other options.

## Post

There’s a new TTS model on LiveKit Inference: assemblyai-tts-1, the first text-to-speech model from @AssemblyAI

At a glance:
• ~90ms to first audio
• 4,000+ voices
• English, Spanish, French, German, Italian, and Portuguese, with more on the way
• Word-level timestamps
• $15 per 1M characters

Add it to your agent, test it against the other TTS models on LiveKit Inference, and pick what sounds best for your callers.

Try it now: https://docs.livekit.io/agents/models/tts/assemblyai/

## Quoted post @AssemblyAI

> Introducing AssemblyAI-TTS-1, our first text-to-speech model.
> 
> Natural speech for voice agents, streaming in 90 ms, at $15 per million characters. On accuracy, naturalness, and cost together, it’s the best TTS model you can run at scale.

https://x.com/AssemblyAI/status/2115470615583056042