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Everything worth knowing about AI calling

Plain explanations, real workflows, honest pricing, and the technical detail underneath, organized so you can find the answer without digging.

Knowledge base
49
articles and guides
49
Total articles
5
Categories
~4 min
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100%
Kept up to date
What is

What is an AI voice agent?

An AI voice agent is software that can hold a spoken phone conversation on its own, understanding what a person says and responding naturally, without a human on the line. It listens, thinks about what to say next, and speaks back, all in something close to real time.

WH
What Is an AI Voice Agent?
What is
Is an AI voice agent the same as a chatbot?
from the FAQ
What is

What is an AI phone agent?

An AI phone agent is a piece of software that makes or answers real phone calls and carries the conversation itself, using AI to understand what's being said and decide how to respond, without a person picking up the phone.

WH
What Is an AI Phone Agent?
What is
Can an AI phone agent handle a real conversation, not just a script?
from the FAQ
What is

What is voice AI?

Voice AI is the broader category of technology that lets software understand and produce human speech. It's the combination of pieces, speech recognition, language understanding, and speech generation, that makes something like an AI voice agent possible.

WH
What Is Voice AI?
What is
Is voice AI the same thing as an AI voice agent?
from the FAQ
What is

What is conversational AI?

Conversational AI refers to software that can hold a back and forth conversation with a person, in text or by voice, understanding context across multiple turns rather than just answering one message in isolation.

WH
What Is Conversational AI?
What is
Is conversational AI only for customer service?
from the FAQ
What is

What is an AI SDR?

An AI SDR is software that performs the sales development rep role, calling new leads, qualifying interest, and booking meetings for a sales team, using an AI voice agent instead of a human making the calls.

WH
What Is an AI SDR?
What is
Does an AI SDR replace a sales team?
from the FAQ
What is

What is an AI sales agent?

An AI sales agent is software that handles some part of the sales process, usually outbound conversations, on its own, using natural language to talk with prospects, answer questions, and move them toward a purchase or a meeting.

WH
What Is an AI Sales Agent?
What is
Can an AI sales agent close a deal on its own?
from the FAQ
What is

What is an AI receptionist?

An AI receptionist answers incoming phone calls for a business, handling routine requests like scheduling or basic questions directly, and routing anything more complex to the right person, without a human needing to answer every call.

WH
What Is an AI Receptionist?
What is
Can it actually book appointments?
from the FAQ
What is

What is AI calling?

AI calling refers to phone calls, either placed or answered, that are carried out by an AI voice agent instead of a human, using voice AI to understand and respond to the conversation in real time.

WH
What Is AI Calling?
What is
Is AI calling legal?
from the FAQ
What is

What is an AI appointment setter?

An AI appointment setter is software that calls or answers calls from leads and books a confirmed appointment directly onto a calendar during the conversation, handling the same job a human appointment setter would.

WH
What Is an AI Appointment Setter?
What is
Does it check real calendar availability?
from the FAQ
What is

What is AI lead qualification?

AI lead qualification is the process of using AI, usually through a real conversation, to determine whether a lead is a genuine fit and worth a sales team's time, instead of relying on a rep to find that out manually.

WH
What Is AI Lead Qualification?
What is
What criteria does it use to qualify a lead?
from the FAQ
How it works

How do AI voice agents work?

An AI voice agent works by converting a caller's speech into text, deciding what to say back using a language model, and converting that response back into spoken audio, all within a fraction of a second, repeated for every exchange in the call.

HO
How Do AI Voice Agents Work?
How it works
Why does the AI sometimes pause before responding?
from the FAQ
How it works

How AI calling works, end to end

AI calling starts with a lead entering a calling campaign, moves through an actual AI voice conversation, and ends with the outcome, whether booked, failed, or unanswered, automatically recorded and used to update the pipeline.

HO
How AI Calling Works
How it works
What happens if a lead doesn't answer?
from the FAQ
How it works

How AI lead qualification works

AI lead qualification works by having the AI ask a defined set of questions during a real conversation, then evaluating the lead's answers against criteria the business has set, like budget, timeline, or fit, to reach a clear qualified or unqualified outcome.

HO
How AI Lead Qualification Works
How it works
Can the criteria be different for different campaigns?
from the FAQ
How it works

How AI appointment setting works

AI appointment setting works by confirming a lead's interest during the conversation, checking real time calendar availability, and proposing and locking in a specific time right there on the call, without a separate scheduling exchange afterward.

HO
How AI Appointment Setting Works
How it works
Does this avoid double booking?
from the FAQ
How it works

How AI sales agents work

An AI sales agent works by moving through a typical sales conversation, introducing the offer, understanding the prospect's needs, responding to questions or objections, and guiding toward a clear next step, whether that's a booked meeting or a closed sale.

HO
How AI Sales Agents Work
How it works
Can it really respond to unexpected objections?
from the FAQ
How it works

How AI SDRs work

An AI SDR works by picking up a new lead the moment it enters the system, calling them directly, qualifying their interest and fit through conversation, and booking a meeting with a human rep if the lead is genuinely a good match.

HO
How AI SDRs Work
How it works
Does the AI SDR work my target list or only inbound leads?
from the FAQ
How it works

How AI voice agents book meetings

An AI voice agent books a meeting by recognizing when a prospect has genuinely agreed to move forward, checking real availability against a connected calendar, and confirming a specific time with the prospect before the call ends.

HO
How AI Voice Agents Book Meetings
How it works
What if the prospect wants to think about it first?
from the FAQ
How it works

How AI agents handle objections

An AI agent handles objections by recognizing the type of pushback being raised, whether it's about price, timing, trust, or something else, and responding with a relevant answer based on guidance built into the campaign, rather than following one fixed rebuttal for every situation.

HO
How AI Agents Handle Objections
How it works
Does the AI handle objections it wasn't specifically trained on?
from the FAQ
Cost & buying

How much does an AI voice agent cost?

Most AI voice agent platforms charge based on calling minutes used, similar to a phone bill, rather than a flat fee per agent. The actual cost for a business depends heavily on call volume and average call length, more than on the technology itself.

CO
How Much Does an AI Voice Agent Cost?
Cost & buying
Is there usually a free trial?
from the FAQ
Cost & buying

AI voice agent pricing explained

AI voice agent pricing is usually structured around a monthly plan that includes a set number of calling minutes, with the option to top up additional minutes as needed once that allowance runs out.

CO
AI Voice Agent Pricing Explained
Cost & buying
What happens if I run out of minutes mid month?
from the FAQ
Cost & buying

How to think about AI voice agent ROI

The return on an AI voice agent usually comes from two places at once, more leads actually getting called due to speed and volume, and a higher conversion rate on those calls because response time improves so dramatically.

CO
AI Voice Agent ROI: How to Think About It
Cost & buying
How quickly do businesses usually see a return?
from the FAQ
Cost & buying

What determines AI calling cost

AI calling cost is driven primarily by total connected minutes, which depends on how many calls you place and how long each conversation runs, more than any fixed per agent or per feature charge.

CO
AI Calling Cost: What Determines the Price
Cost & buying
Is cost the same for outbound and inbound calling?
from the FAQ
Cost & buying

AI SDR cost compared to hiring a human SDR

An AI SDR is typically billed based on calling minutes used, while a human SDR involves salary, benefits, training time, management overhead, and ramp up time before they're fully productive. The full comparison usually favors AI SDR cost significantly on a per conversation basis.

CO
AI SDR Cost vs Hiring a Human SDR
Cost & buying
Can an AI SDR fully replace a human SDR team?
from the FAQ
Cost & buying

What to expect from AI SDR ROI

AI SDR ROI is typically measured by comparing the pipeline value generated, meetings booked multiplied by average deal value, against the calling cost required to produce it, and the ratio is usually favorable given how low minute based calling costs are relative to a single closed deal.

CO
AI SDR ROI: What to Expect
Cost & buying
How long before I see a measurable ROI?
from the FAQ
Cost & buying

AI voice agent vs human: how they actually compare

An AI voice agent generally wins on speed, consistency, and volume, while a skilled human still has an edge in the most complex, relationship driven conversations. Most businesses get the best results using AI for the high volume first stage and humans for what comes after.

CO
AI Voice Agent vs Human: How They Compare
Cost & buying
Do customers respond negatively to talking to an AI?
from the FAQ
Cost & buying

AI voice agent vs IVR: what's actually different

An IVR system works off a fixed menu of button presses or a narrow list of expected phrases, while an AI voice agent understands open ended, natural speech, which is why one so often feels frustrating to callers and the other can feel like talking to a real person.

CO
AI Voice Agent vs IVR: What's the Difference
Cost & buying
Can an AI voice agent do everything an IVR does?
from the FAQ
Cost & buying

AI voice agent vs chatbot: what's actually different

A chatbot handles typed conversation, usually on a website or messaging app, while an AI voice agent handles spoken conversation over a real phone call. The underlying conversational technology is often similar, but the medium changes how and when each one gets used.

CO
AI Voice Agent vs Chatbot: What's the Difference
Cost & buying
Is one more effective than the other?
from the FAQ
Cost & buying

AI SDR vs human SDR: which should you use?

An AI SDR generally wins on speed, cost, and consistency across large volumes of leads, while a human SDR tends to hold an edge on nuanced, relationship driven conversations. Most businesses get the strongest results combining both rather than choosing one exclusively.

CO
AI SDR vs Human SDR: Which Should You Use?
Cost & buying
Can a small team use only an AI SDR with no human SDR?
from the FAQ
Implementation

How to build an AI voice agent

Building an AI voice agent mainly means defining who it is, what it should accomplish, and how it should talk, rather than writing code. Most of the actual work is thinking through the conversation the way you'd brief a new hire.

IM
How to Build an AI Voice Agent
Implementation
Do I need to know how to code to build one?
from the FAQ
Implementation

How to deploy an AI voice agent

Deploying an AI voice agent means connecting it to a real campaign, a real lead source, and setting it live, moving from a tested configuration to one that's actually handling calls with real prospects.

IM
How to Deploy an AI Voice Agent
Implementation
Can I deploy an agent without any leads yet?
from the FAQ
Implementation

How to create an AI calling campaign

Creating a calling campaign means defining everything the AI needs to run a specific type of call well, the goal, the pitch, who it's talking to, and the rules for how persistent it should be when someone doesn't answer.

IM
How to Create an AI Calling Campaign
Implementation
Can I run multiple campaigns at once?
from the FAQ
Implementation

How to automate lead follow up

Automating lead follow up means setting up a system that reaches back out to leads who didn't convert on the first touch, on a defined schedule, without depending on a rep remembering to do it manually.

IM
How to Automate Lead Follow Up
Implementation
How many follow up attempts is reasonable?
from the FAQ
Implementation

How to automate lead qualification

Automating lead qualification starts with clearly defining what actually makes a lead worth pursuing for your specific business, then configuring an AI agent to ask about exactly that during a real conversation.

IM
How to Automate Lead Qualification
Implementation
Can qualification criteria differ by lead source?
from the FAQ
Implementation

How to automate appointment setting

Automating appointment setting means connecting a real calendar, defining what counts as genuine interest before offering a time, and configuring the AI to lock in a specific booking during the call itself rather than leaving it to a follow up.

IM
How to Automate Appointment Setting
Implementation
Do I need a specific calendar tool for this?
from the FAQ
Implementation

How to automate outbound calling

Automating outbound calling means setting up an AI agent, defining a campaign around your specific offer, and connecting a lead list, so calls go out consistently without a human dialing each number manually.

IM
How to Automate Outbound Calling
Implementation
How big should my first lead list be?
from the FAQ
Technical

Voice agent architecture explained

A voice agent system is typically built from a few connected layers, a telephony layer that handles the actual phone connection, a speech processing layer that converts audio to text and back, and a language model layer that decides what to say.

TE
Voice Agent Architecture Explained
Technical
Are these layers usually built from a single vendor?
from the FAQ
Technical

Voice AI architecture: how STT, LLM, and TTS work together

Voice AI architecture generally follows a pipeline, speech to text converts what's said into text, a language model decides on a response, and text to speech converts that response back into audio, all repeated for each turn of the conversation.

TE
Voice AI Architecture: STT, LLM, and TTS
Technical
Does a faster language model always mean a faster conversation?
from the FAQ
Technical

Voice agent API: what it typically supports

A voice agent API generally lets you send leads into a calling campaign programmatically, trigger and manage campaigns through code, and pull call data, transcripts, and outcomes back into your own systems on demand.

TE
Voice Agent API: Sending Leads and Pulling Data Programmatically
Technical
Is API access available on every plan?
from the FAQ
Technical

Voice agent webhooks: real time events for your stack

Voice agent webhooks send a real time notification to an endpoint you control whenever something happens, a call completes, a lead status changes, or a meeting gets booked, letting you build custom logic on top of that event instead of polling for updates.

TE
Voice Agent Webhooks: Real Time Events for Your Stack
Technical
What format does webhook data typically come in?
from the FAQ
Technical

Voice AI latency: why it matters and what affects it

Latency in voice AI refers to the delay between a person finishing speaking and the AI beginning its response. Even small delays feel unnatural in a phone conversation, which makes latency one of the most important technical factors in whether a voice agent feels genuinely conversational.

TE
Voice AI Latency: Why It Matters and What Affects It
Technical
What's considered good latency for a voice agent?
from the FAQ
Technical

STT, TTS, and LLM: the three pillars of voice AI

Every voice AI system relies on three core components working together, speech to text to understand what's said, a large language model to decide how to respond, and text to speech to actually say it back.

TE
STT, TTS, and LLM: The Three Pillars of Voice AI
Technical
Are STT, LLM, and TTS always from the same provider?
from the FAQ
Technical

Speech to text for voice agents

Speech to text is the component that converts a caller's spoken words into written text a voice agent can actually process. In a live phone conversation, it needs to be both fast and accurate, since it's the very first step in the entire response pipeline.

TE
Speech to Text for Voice Agents
Technical
How accurate is speech to text on real phone calls?
from the FAQ
Technical

Text to speech for voice agents

Text to speech is the component that converts a voice agent's generated response, which starts as plain text, into natural sounding spoken audio played back to the caller. Voice quality here has an outsized effect on how human the entire interaction feels.

TE
Text to Speech for Voice Agents
Technical
How natural does modern text to speech actually sound?
from the FAQ
Technical

LLMs for voice agents: what makes a good fit

The language model powering a voice agent needs to balance response speed, since delay is very noticeable on a live call, with strong instruction following and reasoning, since it's responsible for actually carrying a coherent, useful conversation.

TE
LLMs for Voice Agents: What Makes a Good Fit
Technical
Do voice agents always use the newest, largest language model?
from the FAQ
Technical

Voice agent call routing

Call routing determines which agent, campaign, or destination a given lead or call should go to, based on rules like source, region, or product interest, so every conversation is handled by the setup actually built for it.

TE
Voice Agent Call Routing
Technical
Can routing rules be based on custom fields?
from the FAQ
Technical

Voice agent human handoff

Human handoff is the process of transferring an active call from an AI agent to a real person, either live during the conversation or as a scheduled follow up, and doing it well is important for keeping the caller's experience smooth rather than jarring.

TE
Voice Agent Human Handoff
Technical
Can the AI transfer a live call to a human immediately?
from the FAQ
Technical

Voice agent CRM integration

Connecting a voice agent to a CRM generally happens one of two ways, a native, pre built connection for widely used CRMs, or a webhook and API based connection that works with essentially any CRM that supports outbound automation.

TE
Voice Agent CRM Integration
Technical
Which CRMs typically have native connections?
from the FAQ
Technical

Voice agent calendar integration

Calendar integration for a voice agent typically works one of two ways, a native connection that checks real availability and creates a genuine calendar event, or a booking link approach that records interest and points the lead to an existing scheduling page.

TE
Voice Agent Calendar Integration
Technical
Does the booking link approach avoid double booking?
from the FAQ
Technical

Voice agent call analytics

Voice agent call analytics generally cover call volume, outcomes, conversion rates, and campaign level performance, tracked automatically as calls happen, and typically available both through a dashboard and through the platform's API for custom reporting.

TE
Voice Agent Call Analytics
Technical
Is analytics data available in real time?
from the FAQ

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