---
id: "assemblyai/assemblyai-tts-1"
also: ["assemblyai/assemblyai-tts-1-20261028"]
card_usd_per_m: "15.0 in, 0.0 out, at assemblyai"
cheapest_list_usd_per_m: "15.0 in, 0.0 out, at assemblyai on openrouter"
context: 0
max_output: 0
input: ["text"]
output: ["speech"]
released: "2026-10-28"
api: ["/api/v1/audio/speech"]
endpoints: 2
gateways: "openrouter (2)"
no_training: 2
trains: 0
retains_prompts: 2
---
# AssemblyAI: TTS 1

AssemblyAI TTS 1 is a text-to-speech model from AssemblyAI. It is suited for voice agents, narration, and multilingual applications, and draws on a public library of several thousand voices across...