# AssemblyAI's first text-to-speech model is now on OpenRouter



OpenRouter



AssemblyAI-TTS-1, AssemblyAI's first text-to-speech model, is now available on OpenRouter. It's built for voice agents, starts streaming audio in about 90 ms, costs $15 per million characters and offers more than 4,000 voices, served from the US or the EU.

- Announcement time: Oct 29, 2026 04:32 · Beijing Time (UTC+8)
- Review updated: Oct 29, 2026 10:32 Thu · Beijing Time (UTC+8)

## Sources

- Source excerpt: https://x.com/OpenRouter/status/2115542118064382303
- Source excerpt: https://x.com/OpenRouter/status/2115542130211119193

Canonical entry: https://www.ailyre.com/source/?id=openrouter-assemblyai-tts-1-2026-10-28&lang=en