Voice AI fundamentals
The vocabulary people reach for before they know which words are load bearing. Most confusion in this category comes from four words being used interchangeably when they describe different things: agent, bot, assistant and IVR.
Agentic voice
Agentic voice describes voice systems that act autonomously toward a goal rather than only responding to what was said, with the emphasis on initiative and multi-step task completion.
AI receptionist
An AI receptionist is a voice agent doing the job a front-desk or switchboard person does, answering, greeting, handling routine questions, taking messages, booking and routing callers, which makes it a use case rather than a distinct technology.
Conversational AI
Conversational AI is technology that holds a back-and-forth dialogue with a person, in text or in speech, and it is the parent category that voice agents and AI chatbots both belong to.
Conversational IVR
Conversational IVR replaces the numbered phone menu with an open question, letting callers say what they need in their own words while keeping the same routing structure underneath, which makes it the transitional form between IVR and a true voice agent.
IVR
IVR, or Interactive Voice Response, is the automated phone menu that routes callers with keypad tones or a small set of recognized words, such as press one for sales and press two for support.
Multimodal agent
A multimodal agent is a system that interacts across more than one channel at the same time, most often speech, text and a screen, so it can hear a question, answer aloud, and show something on the page at once.
Voice agent
A voice agent is software you talk to out loud that hears you, works out what you are asking, decides what to do about it, and answers in speech.
Voice AI
Voice AI is the umbrella term for artificial intelligence applied to speech, covering recognition, synthesis, conversation, analytics, biometrics and generation, and it names a category rather than a single product.
Voice assistant
A voice assistant is a general-purpose spoken helper tied to a device or platform, such as those on phones and smart speakers, that works for the user across many tasks rather than for a single business.
Voice bot
A voice bot is an automated spoken system that follows an authored script or decision tree, handling the paths it was built for and falling back on anything nobody anticipated.
Voice user interface
A voice user interface (VUI) is the design discipline for systems people talk to, covering how a spoken interaction is structured, what the system says, and how it handles the moments that go wrong.
Voice widget
A voice widget is the embeddable front end of a website voice agent: the script tag that puts it on the page, the isolated interface a visitor taps, and the microphone and audio-transport layers behind it.
Website voice agent
A website voice agent is a voice agent that runs on a web page rather than a phone line, so a visitor can ask a question out loud and hear the site answer it from the information that business has published.
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