SI Fly

← All launches · #039 · 2026-10-31

AssemblyAI TTS-1

Streaming text-to-speech for live voice agents

AssemblyAI-TTS-1 turns text into streaming speech for voice agents on live calls, over WebSocket, HTTP or an OpenAI-compatible endpoint. It offers a catalog of over 4,000 voices plus instant voice cloning, and speaks English, Spanish, French, German, Italian and Portuguese. Pricing is $15 per 1 million input characters, with no annual contract.

Try AssemblyAI TTS-1 →

Share this launch

Featured on SI Fly

Download PNG (transparent) · Download SVG

Embed this badge on your site (links back to this page):

<a href="https://siflie.com/launches/assemblyai-tts-1/"><img src="https://siflie.com/badges/featured-on-si-fly.png" alt="Featured on SI Fly" width="220" height="44"></a>

Markdown:

[![Featured on SI Fly](https://siflie.com/badges/featured-on-si-fly.png)](https://siflie.com/launches/assemblyai-tts-1/)

Plain text:

Featured on SI Fly — AssemblyAI TTS-1 is launch #039: https://siflie.com/launches/assemblyai-tts-1/

This badge means AssemblyAI TTS-1 was featured on SI Fly as launch #039. It is not an endorsement or certification of the tool's quality, safety, or business performance. Use it only while this launch page is live; if the tool is delisted, please remove the badge.

Launch pages describe tools based on public information provided by their makers. SI Fly does not endorse tools and makes no claims about their performance.