Stop losing leads
while you sleep.
78% of sales go to the first business that responds. The average small business takes 47 hours. CortexaOS responds in minutes — and never stops following up until the deal is closed or the lead opts out.
Every missed call is a missed client.
The data is unambiguous. And most businesses are blind to how much they're losing.
calls go unanswered at the average business
of qualified prospects don't call back after voicemail
of businesses have true after-hours answering
response window before lead interest drops sharply
Phone rings at 7pm on Friday.
Goes to voicemail.
Caller Googles "similar business near me" and calls your competitor.
You see a missed call Monday morning.
The deal is already lost.
Phone rings at 7pm on Friday.
AI Receptionist answers immediately.
Qualifies the caller. Books a consultation for Tuesday.
You wake up Monday to a confirmed appointment in your calendar.
The deal is already yours.
The only AI voice agent that
knows your industry cold.
Katherine isn't a generic bot that reads a script. She's trained for the trades and speaks the language your clients expect — from the first ring.
What "industry-specialized" actually means
HVAC
Knows ServiceTitan pricebook comparisons, flat-rate vs T&M, dispatch priority by equipment age and warranty status
Roofing
Handles storm-damage urgency triage, insurance adjuster scheduling, supplement workflow questions
Plumbing
Speaks backflow certification renewals, water heater sizing questions, and flat-rate Good/Better/Best quoting
Electrical
Handles NEC panel-load questions, permit status updates, and emergency triage for sparking or burning-smell calls
General Contractor
Manages RFI and submittal status calls, subcontractor prequalification questions, and payment application timing
Landscaping
Books route-based service visits and answers chemical application and treatment schedule questions
Pool Builder
Qualifies new build vs. service leads, books design consults, and answers permit and maintenance-plan questions
Cleaning
Books one-time and recurring cleans, handles reschedules, and answers move-out and add-on service questions
Answers every inbound call professionally and in your brand voice
Qualifies leads with industry-specific questions — not generic scripts
Books appointments directly into your calendar — zero friction
Takes detailed messages and routes urgent calls appropriately
Sets up live CortexaOS trial accounts during the call — demo to activated in minutes
Works across phone, web chat, and messaging channels simultaneously
Hear Katherine right now
Call our live demo line. She'll qualify you, walk you through a vertical-specific scenario, and activate your free trial — all on the first call.
If your average client is worth $2,500 and you miss 4 calls a month — that's $10,000/month in revenue at risk. At $149/mo, recovering one client per month delivers 67x ROI. The AI Receptionist pays for CortexaOS before you've used any other feature.
78%
of sales go to the first business that responds
The fortune is in the follow-up.
Your AI does it automatically.
Most businesses fail not because their product is bad — but because no one followed up. That problem is now solved.
Responds to new leads in minutes, not hours — while intent is still hot
Sends personalized follow-up sequences based on how the lead came in
Nurtures cold leads for 30, 60, 90 days without any manual effort
Sends appointment reminders that reduce no-shows by up to 40%
Re-engages dead leads with win-back campaigns at the right moment
Escalates hot leads to you in real time with full conversation context
20 leads/month. 30% going cold from slow follow-up = 6 lost leads. At an average deal of $1,500, that's $9,000/month you're leaving behind. Your Follow-Up Agent is working on all 20 from the moment they inquire — at any hour, on any channel.
Together, they close the entire loop.
From first contact to signed deal — fully automated, fully on-brand.
Inquiry
A prospect reaches out — any channel, any hour
AI Receptionist answers
Instantly. Professionally. In your voice.
Lead qualified
Smart questions filter out tire-kickers automatically
Follow-Up Agent nurtures
Multi-touch sequences keep you top of mind for weeks
Appointment booked
Directly into your calendar — you just show up
Deal closed
You get paid. The loop begins again.
"Every other tool in CortexaOS is a bonus. These two alone justify the subscription."
Start with 100 free minutes.
Scale as you grow.
Katherine is on every plan. Pure pay-per-minute — no bundles, no waste. Lower rates at higher tiers. No credit card to try.
Free Trial — 100 minutes, no credit card
Full Katherine access across every trade we support. Call (888) 523-5950 to hear her live before you sign up.
Starter
$149/mo
$199/mo
Annual billing
Operator
$249.99/mo
$299.99/mo
Annual billing
Team
$399/mo
$499/mo
Annual billing
Enterprise
Custom
HIPAA + BAA available
Month-to-month available at annual price +10%. 3-year lock-in promo pricing shown.
How Katherine compares to generic AI voice agents
Price per minute is only half the story.
| Provider | Price/min | Industry depth | What you get |
|---|---|---|---|
| Bland.ai | $0.09 | Generic | Basic call routing, scripted flows. No vertical context. |
| Vapi | $0.07 | Generic | Developer platform. Requires significant setup per use case. |
| Retell | $0.13 | Generic | Good voice quality. No industry-specific training or CRM depth. |
| Katherine (CortexaOS) | $0.20–$0.30 | Built for the trades | ServiceTitan pricebook context, NEC panel-load quoting, storm-damage triage, backflow cert tracking — plus full CortexaOS platform, Follow-Up Agent, and live trial activation on the call. |
A generic agent at $0.07/min that can't quote a flat-rate HVAC repair or handle a storm-damage insurance question isn't cheaper — it's just less useful.
Frequently asked questions
Everything you need to know before you start.
Does the AI Receptionist actually answer my business phone?
Yes — it integrates with your business phone number and answers calls in real time using your business name, brand voice, and custom qualification questions.
Can I customize what the AI Receptionist says and asks?
Yes — during onboarding, you configure your business intro, the qualification questions, your calendar booking link, and how urgent calls should be routed.
How long does the Follow-Up Agent follow up?
Configurable — default sequences run 30 days with smart spacing. You can extend to 90 days, modify the cadence, or create vertical-specific sequences.
What if a lead responds and wants to talk to a human?
The Follow-Up Agent detects buyer intent and escalates immediately — you get a real-time notification and the full conversation context.
How does the per-minute pricing work?
Katherine is pure pay-per-minute — no bundled minute pools, no monthly minimums. You pay only for calls made: $0.30/min on Starter, $0.25/min on Operator, $0.20/min on Team. Enterprise is billed at contract pricing. Your 100-minute free trial never expires until you use them up.
Is Katherine available on all plans?
Yes. Katherine is available on every paid plan, plus the free 100-minute trial. AI Follow-Up Agent is also included on every plan — no add-ons, no enterprise gate.
Your competitors who respond faster are winning your leads.
That stops today.
100 free minutes — no credit card required. Katherine answers immediately.
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