Company
Blogs
Trust
Login
ISO 27001Robofy Achieves ISO/IEC 27001:2022 Certification →
EnglishSpanish (Español)French (Français)Portuguese (Português)German (Deutsch)
Voice AI Platform

AI Voice Agents for Inbound Calls

For teams losing business to missed calls - clinics, agencies and multi-location service businesses that answer the phone all day.

Answer every inbound call with an AI voice agent that listens, responds, books appointments and qualifies leads. Deploy it on your phone number or website voice widget with built-in speech-to-text and text-to-speech.

Start Free Book a Free Demo
ISO/IEC 27001:2022 certified Your own Twilio number, billed to you 10 languages, 6 voices

Robofy AI Voice Agents are inbound voice agents for businesses. They answer customer calls automatically, handle support questions, book appointments and qualify leads. They run on a phone number you connect through Twilio, or as voice inside the Robofy website widget.

Real-time voice AI powered by leading model providers

Google Gemini Google Gemini Live
OpenAI OpenAI GPT-Realtime
How It Works

Launch Your Voice AI Agent in 4 Simple Steps

One agent. Two ways in: a real phone number, or the voice widget on your site. Same setup, same conversation.

  1. 1

    Pick a voice and language

    Choose one of six personas and the language this agent should answer in.

  2. 2

    Connect a number or your site

    Bring your own Twilio number, or drop the agent onto your website widget.

  3. 3

    Set the ground rules

    Turn on interruptions, choose how quickly it responds, cap the call length, write the greeting.

  4. 4

    Go live

    Calls are answered automatically the moment it's turned on. No separate deployment step.

Phone

Inbound mobile calls

Someone dials your Twilio number. The same agent answers, even if they never open your website.

  • Works from any phone, no app to install
  • Live caption of what the caller and agent just said
  • Link the number in Voice Settings after Twilio routes the call
How the number connects
Website

Voice on the web widget

A visitor taps the mic on your site. They talk, see the transcript, and can type if they would rather not speak.

  • No phone number required to start
  • Caller and agent lines show as chat while they talk
  • Chat, Book, and WhatsApp stay in the same widget
Instant activation

Go live in under 5 minutes

Secure and compliant

ISO/IEC 27001:2022 certified · GDPR ready

24/7 availability

Never miss a customer call

Always on

Answers every inbound call

Connect a number

Twilio sends the call. Robofy answers it.

Two short setups on the same number. The console clicks live in the setup guide. This is only what has to be true for a caller to reach the agent.

Twilio
  1. 1
    Get a voice number

    Create a Twilio account and buy a number with Voice on. A trial account includes one number.

  2. 2
    Route inbound calls to Robofy

    On that number, set A Call Comes In to a webhook using POST. Incoming calls then go to the agent instead of ringing a desk.

  3. 3
    Optional hold greeting

    Callers hear a short hold line first. Leave the default, or set a language and your own words in the webhook.

Robofy
  1. 1
    Open Voice Settings

    Pick the agent that should answer, then open its Voice Settings tab.

  2. 2
    Turn on Voice Chat

    Enable voice for that agent so it can take live calls, not only the website widget.

  3. 3
    Link the Twilio number

    Add the number with the country code and no plus, choose Twilio, confirm, and save. Example: 14155550198.

A caller dials that number. The agent picks up.

After it is linked Greeting, max call length, voice, and language stay in Voice Settings. You can change those without touching Twilio again.
Number format Enter country code plus digits only. Do not paste spaces, dashes, or a leading +.
Capabilities

What a Technical Evaluator Needs to Know

The real behavior of Robofy's Voice AI, not a simplified summary.

Languages

10 languages

10 supported: English, Hindi, Spanish, French, German, Portuguese (Brazil), Arabic, Japanese, Korean, and Chinese.

Voice personas

6 voices

Six built-in voices to match your brand: bright, warm, and soft female; neutral, deep, and energetic male.

Turn-taking

Interruptible

Callers can interrupt and redirect the AI mid-sentence, the way a real call works. End-of-turn sensitivity (low/medium/high) and the silence duration before the AI responds are both configurable.

Call handling

Configurable

Maximum call duration is configurable (defaults to 3 minutes). A text-input fallback can be enabled for callers who'd rather type, and the greeting message is fully customizable.

Telephony

TTS + STT Whitelabel-ready

Deploy on your website widget or a real phone number. Bring your own Twilio number. Built-in TTS and STT, whitelabel-ready.

Purpose-Built Roles

One Platform, Endless Possibilities

Configure your Voice AI to handle specific business workflows automatically.

The Booking Agent

The Booking Agent

Let customers self-book appointments 24/7 across all your locations.

The Support Agent

The Support Agent

Resolve customer queries instantly across every branch, around the clock.

The Lead Agent

The Lead Agent

Capture and qualify leads automatically, so your team can focus on closing.

Why This Way

Why Not Just Use Voicemail or a Phone Menu?

The two things most businesses already do with calls they cannot answer, and what changes when an agent picks up instead.

Voicemail and phone menus compared with a Robofy AI voice agent
When a call comes in Voicemail or a phone menu Robofy AI Voice Agent
Outside working hours The caller leaves a message, or hangs up The agent answers and handles the request
Booking an appointment Someone calls back the next working day Booked during the call
Caller changes their mind mid-sentence The menu has to be restarted from the top They interrupt and redirect, the way a real call works
Caller does not speak English Usually one recorded language Ten conversation languages and six voices
The request really needs a person The message waits until someone reads it Handed over with the conversation already summarised

Scroll the table sideways to compare

Voice runs on the same AI credits as chat. See plans and pricing.

Simple Pricing

Pay as you go with AI Credits

No complex tiers. Just simple credit-based pricing for ultimate flexibility.

Voice AI Cost

~300 Credits

Per Voice AI message reply

~900 Credits

Per Minute (Avg. 3 messages)

What are AI Credits?
  • Power text replies, voice calls & AI training
  • Never expire as long as your account is active

Base Rate

$1

= 10,000 Credits

BONUS OFFER
Top up $20 for 200,000 extra credits!
Signup Now
Testimonials

What Our Customers Say

"The inbound AI Voice Agent completely transformed our customer support. It seamlessly handles common inquiries via our phone number, drastically reducing our team's workload. The voice quality is surprisingly human-like."

Sarah Jenkins

Customer Success Manager

"Being able to whitelabel Robofy's voice AI and resell it to our clients was a game-changer. Our clients love the easy integration with Twilio, and the AI credits model is so easy to explain and scale."

David Chen

Agency Founder

Trust & Control

What Callers Can Expect

Always

  • Uses the greeting, voice, and language you've configured for that agent.
  • Lets the caller interrupt or redirect mid-sentence if you've enabled it.
  • Ends the call at the configured maximum duration rather than running indefinitely.

Never

  • Switches language mid-call without being told to.
  • Ignores an interruption when barge-in is enabled.
  • Runs past the call-length limit you've set.
FAQ

Frequently Asked Questions

Everything you need to know about our AI Voice Agents.

Can I use my existing Twilio number?

Yes. Bring a Twilio number you already own. Other operators will follow. We do not sell numbers through Robofy.

How accurate is the Speech-to-Text (STT)?

Our enterprise-grade STT models are highly accurate and trained to understand various accents and intents, ensuring a smooth conversational flow.

Is the whitelabel solution completely unbranded?

Absolutely. Our whitelabel solution removes all Robofy branding, allowing you to present the AI Voice Agent as your own proprietary technology to your clients.

How do AI Credits work for Voice Agents?

Voice interactions are billed based on the messages exchanged. Each AI message reply consumes approximately 300 credits. Since an average minute consists of about 3 messages, you can expect a cost of ~900 credits per minute.

Are there any hidden setup fees?

No, there are no hidden setup fees. You only pay for the AI Credits you consume on a pay-as-you-go basis, giving you complete flexibility and control over your usage.

Related features

Human Handoff Escalate a call to a person when it needs one, with full context attached.
Function Tool Calling Let the same voice agent look up orders, book appointments, and take action mid-call.

Never Miss a Call

Deploy an AI Voice Agent on your phone number or website widget in minutes.

Start Free

Put your AI agent on a real phone number. Test it on a free Twilio trial.

Start FreeBook a Demo