CallFlow
by Serverlys
An AI receptionist that sounds human, books appointments, and never takes a day off. Set up in 5 minutes.
No credit card required · Live in 5 minutes
Trusted by 2,400+ businesses
Pick a scenario, enter your number, and our AI agent will call you in seconds.
What is CallFlow?
Traditional IVRs frustrate callers. NLP bots hit dead ends. CallFlow uses LLM-powered voice AI for real conversations that actually resolve calls.
Press 1 for sales, press 2 for support...
Keyword matching with limited responses
Natural, intelligent conversations at scale
How it works
Three simple steps to an AI receptionist that knows your business inside and out.
Share your business name, hours, services, and FAQs. Our AI learns everything it needs to represent you perfectly.
Choose a voice, set call routing rules, connect your calendar, and define how your agent handles every scenario.
Forward your business line to CallFlow or get a new number. Your agent starts answering immediately. That's it.
Voice quality
Your callers won't know the difference. Natural intonation, real-time turn-taking, and sub-second response times.
<800ms
Sub-second responses that feel natural. No awkward pauses or robotic delays.
30+
Choose from dozens of ultra-realistic voices across accents, tones, and languages.
Real
Handles interruptions, pauses, and back-and-forth just like a real conversation.
Every CallFlow agent already sounds natural with 30+ built-in voices. But some business owners want to go further.
With our voice cloning technology, we can replicate your actual voice so every caller hears you on the line. Your tone, your cadence, your personality. Available as an optional upgrade for businesses that want the most personal experience possible.
Voice cloning is set up by our team on a per-account basis. Contact us to learn more or get started.
Voice Profile
Cloned and ready
Your voice
AI clone
Platform
An agentic AI framework that goes beyond answering calls. Book appointments, transfer calls, take payments, and more.
Your AI agent checks real-time availability and books appointments directly into your calendar. Google, Outlook, Cal.com, and more.
Route calls to the right person based on caller intent. Warm transfers with context so your team never asks the caller to repeat themselves.
Upload documents, FAQs, menus, or service details. Your agent retrieves accurate answers from your own data in real time.
Connect your agent to any API. Look up orders, check inventory, process payments, or trigger workflows mid-call.
Serve customers in English, Spanish, French, and more. Your agent detects the caller's language and switches automatically.
Automatically send text confirmations, links, or follow-up messages after every call. Keep customers engaged.
Detects voicemail systems on outbound calls. Leaves a natural-sounding message or retries later based on your preferences.
Every call is recorded and transcribed automatically. Search, review, and export conversations for training or compliance.
Real-time mood detection on every call. Know when a customer is frustrated, satisfied, or ready to buy before the call ends.
See it in action
Your AI agent greets callers by name, understands context, books appointments, and follows up. All without a script.
Live Call · Inbound
CallFlow AI Agent
Good afternoon, thank you for calling Meridian Dental. This is Sarah. How can I help you today?
Hi, I need to schedule a cleaning. Do you have anything open this week?
Of course! I have openings on Thursday at 10 AM and Friday at 2 PM. Which works better for you?
Thursday at 10 works great.
You're all set for Thursday at 10 AM. I'll send you a text confirmation with the details. Is there anything else I can help with?
By the numbers
99.9%
Platform Uptime
2,400+
Active Businesses
<800ms
Average Latency
1M+
Calls Handled
Telephony infrastructure
Carrier-grade reliability with advanced telephony features. Bring your own numbers or let us provision them for you.
Display your business name on outbound calls. Build trust before the caller even picks up.
Bring your own SIP trunk or use ours. Works with Twilio, Vonage, Telnyx, and more.
Run outbound campaigns at scale. Upload a contact list and let your AI agent call them all.
Keep your existing business number. We handle the porting process so nothing changes for your customers.
Analytics & QA
Real-time dashboards, automated quality assurance, and actionable insights for every conversation.
Track call volume, resolution rates, average duration, sentiment trends, and peak hours. All in real time.
Every call is scored automatically. Flag issues, track improvement, and ensure your agent is performing at its best.
Run simulated calls before going live. Test edge cases, refine responses, and deploy with confidence.
Omnichannel
Your AI agent works across voice, SMS, web chat, and API. Same knowledge, same quality, everywhere your customers are.
Inbound and outbound calls
Two-way text conversations
Embed on your website
Build custom integrations
Industry solutions
From healthcare to home services, CallFlow handles the calls so you can focus on what you do best.
Schedule appointments, handle insurance questions, send appointment reminders, and maintain HIPAA compliance on every call.
Qualify leads, schedule consultations, collect case details, and route urgent matters to the right attorney instantly.
Book service calls, provide quotes, dispatch technicians, and handle emergency requests around the clock.
Qualify buyers, schedule showings, answer property questions, and capture leads from every call and listing inquiry.
Take reservations, answer menu questions, handle takeout orders, and manage waitlists without tying up your staff.
Schedule service appointments, provide repair estimates, handle recall inquiries, and keep your bays full.
Security & compliance
Your data and your customers' data is protected by industry-leading security standards and compliance certifications.
Independently audited security controls for data protection and availability.
BAA available. Fully compliant with healthcare data protection requirements.
Full compliance with European data protection regulations and data residency options.
All calls and data are encrypted in transit and at rest. TLS 1.3 and AES-256.
Single sign-on integration and role-based access controls for team management.
Automatically detect and redact sensitive information from transcripts and recordings.
Integrations
CRMs, calendars, helpdesks, and more. CallFlow fits into your existing workflow with zero friction.
Customer stories
"We were losing 15 to 20 calls a day after hours. CallFlow picked up every single one. In the first month, we booked $12,000 in new appointments that we would have missed."
Dr. Rachel Kim
Meridian Dental Group
"I replaced a $3,200/month answering service with CallFlow. It handles twice the volume, never gets sick, and my clients say it sounds better than the old service."
Marcus Johnson
Johnson & Associates Law
"Setup took 10 minutes. No exaggeration. I pasted our FAQ, forwarded the phone, and it was live. We went from missing 40% of calls to missing zero."
Amanda Liu
Apex Plumbing & HVAC
FAQ
Everything you need to know about CallFlow.
CallFlow uses advanced AI to answer your business phone calls. You tell us about your business, customize your agent's voice and behavior, then forward your phone number to us. Your AI agent handles calls 24/7, books appointments, answers questions, and transfers calls when needed.
Most callers do not notice. CallFlow uses ultra-realistic voices with natural intonation, real-time turn-taking, and sub-second response times. The experience feels like speaking with a knowledgeable receptionist.
Absolutely. Just forward your existing number to your CallFlow agent. You can also port your number to us directly. Your customers will not notice any change except that someone finally picks up every time.
No problem. Your AI agent handles unlimited simultaneous calls. No busy signals, no hold music, no lost customers. Everyone gets answered instantly, every time.
Most businesses are live in under 5 minutes. Enter your business details, choose a voice, forward your number, and you're done. No technical skills required.
Yes. You can configure rules for when calls should be transferred to specific team members. The AI provides a warm handoff with full context so the caller never has to repeat themselves.
Yes. CallFlow offers HIPAA-compliant plans with BAA agreements for healthcare providers. All data is encrypted, access-controlled, and auditable.
CallFlow supports English, Spanish, French, German, Portuguese, and more. Your agent can auto-detect the caller's language and switch mid-conversation.
Pricing is usage-based and tailored to your needs. We build a custom plan based on your call volume, features required, and industry. Contact our team for a personalized quote.
Yes. CallFlow integrates with Salesforce, HubSpot, GoHighLevel, Zapier, Make, and many more. Every call automatically logs to your CRM with full transcripts and caller data.
Not at all. If you can fill out a form and forward a phone number, you can use CallFlow. Our team is also available to walk you through setup and configuration.
We offer email and chat support for all customers, with dedicated account management and 24/7 priority support available on enterprise plans. Our team helps with setup, optimization, and ongoing performance tuning.
See how your AI agent handles real calls. Book a live demo today.