Service update · OpenRouter

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

Announcement time

Oct 29, 2026 04:32 · Beijing Time (UTC+8)

Review updated

Oct 29, 2026 10:32 Thu · Beijing Time (UTC+8)

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.