Key Info

AssemblyAI-TTS-1, AssemblyAI's first text-to-speech model built for voice agents, is now available on OpenRouter with 4,000+ voices served from US or EU regions.

Highlights

  • Priced at $15 per 1M characters, with streaming latency of 90 ms
  • Ranked in the best quadrant for speed and accuracy, and highest naturalness among models at $15/1M characters or less, per cekuraAi's benchmark
  • Offers 4,000+ voices with US or EU serving options
  • Available to try now via OpenRouter