Use cases

Best TTS models by use case

The same models do not fit every job. Artificial Analysis rates each text-to-speech model for four listening categories, and Coval's speed tiers single out the models fast enough for a voice agent. Pick the job, then read the table.

• Customer service

  70 models ranked

  Support calls, contact centers and help lines: a caller who waits in silence hangs up, and a voice that stumbles on an order number loses trust.

  Fastest here: Gradium TTS

• Voice agents

  13 models ranked

  Agents that hold a live conversation over the phone or the web, where every extra 100 ms between turns is heard.

  Fastest here: Fluxions vui

• Assistants

  69 models ranked

  Personal and in-app assistants that answer by voice: short replies, frequent turns, a voice people accept to hear all day.

  Fastest here: Gradium TTS

• Entertainment

  69 models ranked

  Game characters, companions and interactive stories, where a voice has to carry emotion and still answer in real time.

  Fastest here: Gradium TTS

• Knowledge sharing

  73 models ranked

  Narration, courses, explainers and accessibility readers: long passages that must be pronounced correctly and sound pleasant for minutes at a time.

  Fastest here: Gradium TTS