FeaturesHow It WorksFAQEarly AccessContact
Sign inApply for Early Access

Never lose ato voicemail again

You run your business. We'll answer the phone.

Apply for Early AccessSee How It Works
30-day money-back
No credit card
5 min setup

Incoming Call

Riverside Family Medicine

Demo
Tethyr

"Thank you for calling Riverside Family Medicine. This is your AI assistant. How can I help you today?"

Caller

"Hi, I need to schedule a follow-up appointment with Doctor Chen."

Tethyr

"Of course! Let me check Doctor Chen's availability. Are you an existing patient with us?"

Voice:

Listen to Tethyr

0:00/0:00

Voices powered by ElevenLabs premium TTS. Premium voices are included with Business and Enterprise plans.

Ready to get started?

Apply for Early Access →

Live in 5 minutes

1

Connect your number

Set up call forwarding from your existing business line. Keep your number — we just pick up when you can't.

Call Forwarding
When busyTethyr
After hoursTethyr
No answerTethyr
2

Tethyr handles the call

Answers with your business name, books appointments, answers FAQs, and captures caller info — all in a natural conversation.

Live Call

0:47
Tethyr

"I'd love to help! Dr. Chen has Thursday at 2pm open. Should I book that?"

Caller

"Yes, that works perfectly."

Tethyr

"You're all set! We'll text you a reminder."

✓

You get a text

Instant SMS with caller name, what they need, and any appointment booked. Full transcript in your dashboard.

Tethyr

Just now

New appointment booked

Sarah Miller called about a cleaning. Booked with Dr. Chen for Thu 2:00 PM.

Callback: (555) 987-6543

Added to your calendar

The cost of a missed call

0%

of callers won't leave a voicemail

Source: Forbes

0%

of customers buy from whoever responds first

Source: Harvard Business Review

$0

average revenue lost per missed call

Source: Invoca

The alternative?

A full-time assistant costs $3,100+/month. Tethyr starts at $99/month.

U.S. Bureau of Labor Statistics, May 2024

Features

Your 24/7 front desk

Everything you need to capture every call, book every appointment, and grow your business.

24/7 Call Answering

Nights, weekends, holidays — every call gets answered. Your competitors' voicemails are your new leads.

New lead captured

Just now

"Sarah M. wants to book a cleaning for Thursday at 2pm"

Automatic Booking

Callers book directly into your calendar. Syncs with Google Calendar, Calendly, and more.

Lead Capture

Name, number, what they need — captured automatically. Never lose another lead to a sticky note.

Smart Call Routing

Emergencies go to you. Routine calls get handled. You set the rules.

Natural Voice

Sounds like a real person, not a robot. Customizable voice, tone, and script for your brand.

Gets Smarter Over Time

Unlike static scripts, Tethyr runs three self-learning loops that analyze your calls and continuously improve. It learns your callers' language, your peak hours, and your most-asked questions — then optimizes itself automatically.

Pattern learned

"AC repair" mentioned in 45% of calls

Accuracy improved

Lead capture rate: 78% → 94%

New FAQ suggested

"Do you offer financing?" — asked 12 times

HIPAA Compliant

Healthcare ready

SOC 2 Certified

Enterprise security

256-bit Encryption

All calls encrypted

Your Dashboard

Everything at a glance

See every call, appointment, and lead in real time. Dark mode included.

Tethyr dashboard showing 9 calls today, 5 appointments booked, 3 leads captured, recent calls feed, and today's scheduleTethyr clients page showing 23 client profiles with call counts, sentiment scores, and contact informationTethyr call detail view with full AI conversation transcript, quality metrics, and sentiment analysisTethyr analytics dashboard showing 57 total calls, 70.2% conversion rate, daily call volume chart, and call outcomes breakdown

Industries

Built for your industry

From dental offices to law firms — Tethyr speaks your language.

Dental
HVAC
Electrical
Law Firms
Medical
Real Estate
Auto Services
Restaurants
Dental
HVAC
Electrical
Law Firms
Medical
Real Estate
Auto Services
Restaurants
Property Management
Fitness
Veterinary
Hotels
Tutoring
Events
Home Services
Professional Services
Property Management
Fitness
Veterinary
Hotels
Tutoring
Events
Home Services
Professional Services

Integrations

Plug into your existing tools

Tethyr connects to the tools you already use — no migration, no hassle.

Google Calendar logo

Google Calendar

Appointment booking

ServiceTitan logo

ServiceTitan

Job sync & dispatch

Clio logo

Clio

Legal intake & cases

Dentrix logo

Dentrix

Patient scheduling

QuickBooks logo

QuickBooks

Invoicing & leads

GoHighLevel logo

GoHighLevel

CRM & marketing

Zapier logo

Zapier

5,000+ apps

Jobber logo

Jobber

Job booking & dispatch

Plus Calendly, Google Sheets, Outlook, SMS & Email, and many more.

FAQ

Questions? We've got answers.

How does the AI assistant sound?
Our AI uses natural, human-like voices — not robotic text-to-speech. You can customize the voice style (professional, friendly, warm) and exactly what your AI says. Most callers genuinely can't tell they're talking to an AI.
Will it work with my existing phone number?
Yes! You keep your current business number. Just set up call forwarding to Tethyr (takes about 5 minutes), and we handle the rest. Your customers call the same number they always have.
What if the AI can't handle a call?
You set the rules. Complex calls, VIP customers, or emergencies can be transferred directly to you or your team in real-time. The AI knows when to escalate and when to handle things independently.
How is this different from Ruby or Smith.ai?
Unlike human answering services that cost $200-500/month, Tethyr uses AI to handle calls at a fraction of the cost. You get 24/7 coverage, instant answers, and no hold times — starting at just $99/month.
Is my data secure? What about HIPAA?
Yes. We're HIPAA compliant and SOC 2 certified. All calls are encrypted, and we never sell your data. Built specifically for healthcare, legal, and other industries that handle sensitive information.
How long does setup take?
Most businesses are live in under 15 minutes. Set up call forwarding, customize your greeting, and you're done. No hardware, no IT team needed.
Can I try it before committing?
Absolutely. Every plan includes a 14-day free trial — no credit card required. Plus, we offer a 30-day money-back guarantee. If you're not happy, you get a full refund.
How does minutes-based billing work?
Each plan includes a set number of call minutes per month (e.g., 100, 300, or 1,000). Only the time your AI is actively on a call counts. If you go over, overage is billed at a low per-minute rate — and we'll notify you before you hit your limit. You can monitor usage in real time from the dashboard and upgrade anytime.

Ready to stop missing calls?

Start converting missed calls into customers today.

Apply for Early AccessContact Us

No credit card required • 30-day money-back guarantee • Cancel anytime