An AI Employee That Answers Every Call in Under a Second

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ON G2
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An AI employee for the phones is a voice agent that picks up instantly, works from your own knowledge base, and takes action while the caller is still on the line. Retell AI puts one on your number: it answers inbound calls, runs outbound campaigns, books appointments, qualifies leads, and transfers the hard cases to a human with the full transcript attached. It works on your existing phone number and runs 24/7 without adding headcount.
Trusted by over 3,000 businesses powering 30+ million calls per month.
How It Works

Go from build to a live call in a day, on your existing number.

Build the agent
Point the agent at your help center, FAQ pages, and product docs through a knowledge base that syncs as that content changes, so it quotes the same policy your team does. Define the call flow with a drag-and-drop builder: greeting, intent detection, lookup, action, and transfer rules. No engineering team is required for a standard agent.
Test against real scenarios
Run the agent through simulation against common scenarios, order status, bookings, account questions, password resets, and angry-caller edge cases, before it touches a caller. Each run scores accuracy and shows where the agent guesses instead of looking up, so you fix the flow and rerun at volume rather than finding gaps in production.
Connect your line and go live
Connect your line through SIP trunking and route calls to the agent, all of them or a percentage for a parallel pilot, and set the exact conditions for human escalation. Go live on one queue, confirm resolution rates, then expand. Existing carriers and phone numbers stay in place.
Monitor and retrain
Every call is transcribed, scored for sentiment, and tagged by outcome. Watch first-call resolution and transfer rate in a dashboard, catch the intents the agent fumbles, and retrain the flow, with quality review across 100% of calls rather than a small sample.
Use Cases

Resolve routine calls without a human

The agent looks up order status, shipping, and account details mid-call through function calls to your systems, then reads the answer back to the caller. It answers policy, password, and how-to questions from the connected knowledge base instead of a static script, and covers nights, weekends, and holidays so after-hours callers reach a working agent instead of voicemail.

Route and transfer the calls that need a person

The agent works out why the caller is phoning in natural language and skips the menu entirely, then hands off to the right human with a call transfer that attaches the live transcript. Escalation thresholds by intent, sentiment, or failed lookups mean only the calls that need a person reach one.

Handle booking, account, and billing tasks mid-call

The agent verifies the caller, updates records in your CRM, and confirms changes back during the conversation, checks live availability to book or reschedule appointments without transferring to the front desk, and takes payment arrangements inside the compliance guardrails you configure per call state.

Run proactive outbound work

Place delivery confirmations, renewal reminders, and appointment notifications before the customer has to call in. Batch call campaigns reach thousands of contacts an hour with no concurrency limits, and the agent tracks which contacts resolved, opted out, or asked for a callback, then syncs the outcome to your records.

Support callers in 31+ languages

Native-quality speech across 31+ languages, with automatic language detection for 10 of them, so one agent covers callers in the language they start in.

Lift outbound answer rates with branded caller ID

Outbound calls and notifications carry a verified business identity through branded call ID, so customers pick up instead of ignoring an unknown number.

Compliance

Regulated phone work carries protected data on the call itself, so the platform is built for it.

SOC 2 Type II

Call data runs on SOC 2 Type II certified infrastructure, meeting enterprise security requirements.

HIPAA

Regulated teams deploy under HIPAA with a self-service BAA portal available from the dashboard.

GDPR

Caller data is processed under GDPR, covering consent and access rights for callers in the EU.

PII Redaction

Sensitive fields are masked in transcripts automatically, alongside role-based access and configurable retention.

Feature

Why teams choose Retell AI for an AI employee

Integrations

Seamless

Integrations with Your
Tech Stack

View All Integrations
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Zapier
  • Salesforce
  • Hubspot
  • Twillio
  • Vonage
  • Go High Level
  • 8n8
  • Zapier
  • Salesforce
  • Avaya
  • Genesys
  • Five9
  • Amazon Connect
  • Telnyx
  • Make
  • Cal.com
  • Avaya
  • Genesys
  • Five9
  • Amazon Connect
  • Telnyx
  • Make
  • Cal.com
Pricing

Cut Costs by 90% with AI phone Agents

Pay as you go

$0 to start.

$0.07–$0.12 per minute – Pay only for what you use.
60 mins of free access.
20 concurrent calls.
10 Free Knowledge Bases.
Get Started
FAQ

Frequently asked questions.

What is an AI employee?

An AI employee is software that takes on a defined work role and carries it out on its own, instead of answering one prompt and stopping. On the phone, that means a voice agent that answers calls, works out what the caller wants, retrieves answers from your knowledge sources, completes tasks like lookups and bookings, and transfers to a human when needed. It differs from a basic chatbot or touch-tone IVR because it holds a multi-turn conversation and acts during the call, sitting on top of your existing help desk and CRM rather than replacing them.

Will an AI employee replace our human staff?

No, and that is not the goal. It absorbs the repetitive, high-volume calls that pull people away from work needing judgment, then warm-transfers anything complex to a human with full context. SWTCH cut support costs by more than 50%, and Pine Park Health raised scheduling NPS by 38% after putting calls through a voice agent. Your team spends less time on phone tag and more on the calls that matter. Results vary by setup and call volume.

Does it work with our existing phone number and CRM?

Yes. It connects through SIP trunking on the telephony side and syncs call data into your stack, including a native HubSpot integration, so resolutions, transcripts, and extracted fields land where agents already work. You keep your ticketing system and add AI to the phone channel.

How fast can we go live?

A standard agent reaches production in days, not months. Pre-built templates, a no-code flow builder, and simulation testing remove the engineering bottleneck, and you can launch on one queue first, like after-hours answering, before expanding.

What if a caller refuses to talk to AI?

The agent recognizes the request and routes the caller to a human immediately, passing the transcript along. You configure that rule, so a simple “agent, please” triggers an instant warm transfer instead of a frustrating loop.

How much does an AI employee cost?

Pricing is pay-as-you-go at $0.07 per minute with no platform fee or contract, plus $10 in free credit to start. You pay for minutes worked, not seats, so the cost reads as cost per call deflected rather than a flat per-agent license.

Revolutionize your call operation with Retell