AssemblyAI Launches TTS-1 Model on OpenRouter
AssemblyAI has released its first text-to-speech model, AssemblyAI-TTS-1, now available on OpenRouter. Designed for voice agents, it offers streaming with 90ms latency and over 4,000 voices at $15 per million characters. Third-party benchmarks rank it highly in speed, accuracy, and naturalness.
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OpenRouter · 2026-10-28 20
AssemblyAI-TTS-1 is now live on OpenRouter!
@AssemblyAI's first text-to-speech model, built for voice agents. Ranked in the best quadrant for speed and accuracy, and highest naturalness for models at $15/1M characters or less, per @cekuraAi's benchmark.
4,000+ voices, served from US or EU.
↳ 引用 @AssemblyAI (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.