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The phone rings at 11:42 pm. Someone picks up.

A Tessera voice agent answers every call on the first ring, day or night. It sounds like your best receptionist, books the job, texts the caller and updates your CRM before you've seen the missed-call list you no longer have.

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Harbour Plumbing, last 24 hours (simulated)

0calls answered after hours that would have gone to voicemail

    • Open, 9 to 6
    • After hours
    • Played below
    0 calls today · 0 to voicemail
    Call at 23:42 · 02:14

    "Water is coming through my ceiling."

    Connecting 00:00
      What happened next
      • BookedTomorrow, 7:30 am. Engineer: Dan
      • SMS sentConfirmation, Dan's photo, stopcock tip
      • CRM updatedNew job, priority high, transcript attached

      Owner woken up: nobody.

      Why it works

      Sounds like a person. Works like a system.

      It understands what the caller needs, answers in real time and sorts it out on the spot, so your phones run smoother and cost less than another hire.

      Book a call
      Real-time<280ms

      Reply latency. Fast enough that nobody notices a pause, with live calendar and stock lookups mid-call.

      Multilingual95+

      Languages, with automatic dialect switching when the caller does.

      On every call
      1. 01

        Plugs into your tools

        Two-way sync with your CRM, Calendly, Stripe and custom webhooks.

      2. 02

        Talks like a human

        Natural pauses, a real breath, and it stops when the caller interrupts.

      3. 03

        Answers quickly and correctly

        Pulls from your knowledge base and live stock while the caller waits.

      4. 04

        Finishes the job

        Qualifies, books, and fires off the SMS without anyone touching it.

      Lead qualify

      Hot, warm, cold. Automatically.

      Every caller's intent is scored and tagged in your CRM, so hot ones get a callback first.

      • Hot · Emergency, today
      • Warm · Quote for boiler
      • Cold · Asked about hours
      24/7 concurrency

      No hold music. Ever.

      Ten people call at once? Ten calls get answered at once.

      Flexible AI Voice Agent Development Pricing Plans

      Discover AI Voice Agent packages crafted to handle calls, qualify leads, and book appointments 24/7. With clear pricing, you get smarter engagement, higher conversions, and scalable results.

      Startup Plan

      Startup Plan

      AI-powered voice agents for startups seeking fast, qualified support.

      USD / Setup Fee$1,497$1,871.25Flat 20% Off
      Key capabilities
      • Inbound Call Management for One Business Line
      • Custom Greeting & Brand Voice Setup
      • AI Call Routing & FAQ Answering (up to 20 responses)
      • Voicemail-to-Text & Email Delivery
      • Simple Appointment Booking Integration (Calendly, Google Calendar)
      • Call Summary Reports (Daily or Weekly)
      1 Round of RevisionsDelivery: 7–10 Business Days
      Get Started Book a call to choose
      Most popular

      Premium Plan

      Smart voice agents automation for businesses driving scalable customer growth.

      USD / Setup Fee$3,497$4,371.25Flat 20% Off
      Key capabilities
      • Everything in Starter
      • Outbound Call Handling (Lead Follow-Up & Reminders)
      • Lead Qualification Script (Hot, Warm, Cold)
      • FAQ Handling (up to 50 responses)
      • Integration with CRM or Booking System (HubSpot, Zoho, etc.)
      • Multi-Number Support (up to 3 lines)
      • AI Call Transcription & Searchable Logs
      2 Round of RevisionsDelivery: 14–18 business days
      Get Started Book a call to choose
      Enterprise grade

      Diamond Plan

      Advanced AI voice agents for enterprises ensuring scalable, round-the-clock service.

      USD / Setup Fee$6,997$8,746.25Flat 20% Off
      Key capabilities
      • Everything in Premium Plan
      • Multi-Language Call Handling (English + 1 language)
      • Complex Workflow Automation (e.g., pre-qualify, book, send follow-up emails)
      • E-commerce Order Status & Tracking Over Calls
      • Outbound Campaign Calls (Appointment Setting, Renewal Reminders)
      • Integration with Multiple Systems (CRM, ERP, Payment Gateways)
      • Real-Time Data Lookups (Inventory, Order Info, etc.)
      3 Round of RevisionsDelivery: 21–28 business days
      Get Started Book a call to choose

      Telephony and model usage is billed at cost. Compare all nine packages.

      Pick its voice. Decide where calls go.

      Every agent gets a persona that fits your business and a routing plan you sign off. Try both here. No sound needed.

      Voice and tone
      RosieFriendly and unhurried. Great for clinics, salons and anyone calling worried.

      "Hi, thanks so much for calling Harbour Plumbing, this is Rosie. What's going on today, and how can I help?"

      Pace
      Warmth
      Pauses
      Call routing

      Booking: slot offered from your calendar, booked, and confirmed by SMS. About 90 seconds.

      How we get your line answered in days.

      Five steps from your current call headaches to a voice agent picking up in well under a second, tested hard before your first real caller hears it.

      1. 01

        Consultation

        We listen to your call recordings and go through scripts, tone, FAQs and the objections callers raise.

        Day 1
      2. 02

        Strategy design

        We design the conversation paths, what it can look up, and the small fillers that make it sound natural.

        Day 2 to 3
      3. 03

        Implementation

        We build the voice with human inflection and the accent that suits your callers, tuned for fast replies.

        Day 3 to 9
      4. 04

        QA and sandboxing

        We connect Twilio or your SIP line, your CRM and calendar, then run hundreds of test calls full of accents, interruptions and edge cases.

        Day 8 to 12
      5. 05

        Launch

        It goes live 24/7 with call recording, a live dashboard and warm handoffs to your team.

        Day 7 to 21
      6. Your part~3 hrs

        A kickoff call, one listen to test calls, and your sign-off.

      Measured on every single call.

      Figures from live Tessera voice agents, averaged over the last 90 days.

      Uptime reliability 0

      Telephony that stays up around the clock, with automatic failover if a line drops.

      Faster response time0

      quicker than a human team answering the same line.

      Reply latency<0ms

      from the caller stopping to the agent speaking.

      More jobs booked+0

      for trades clients who used to miss after-hours calls.

      Why owners pick Tessera

      A voice your callers actually like.

      We combine careful voice tuning, fast telephony and a customer-first mindset, so your phone calls run themselves without sounding like it.

      Feels personal

      Adapts its tone to each caller, remembers returning customers, and builds the kind of loyalty a hold queue never does.

      Always there

      Round-the-clock answering with zero hold time, and a person on our side if anything looks off.

      Tuned for your trade

      Vocabulary, accent and pace set for your industry.

      Scales on demand

      Extra lines and busy Mondays cost nothing extra in stress.

      Learns from every call

      We review recordings weekly and sharpen the answers that trip it up.

      Shows you what callers want

      Transcripts and caller mood, summed up so you can decide what to change, quickly.

      • Happy
      • Neutral
      • Upset

      Owners on the day the phone got answered.

      Clinics, trades and sales teams running Tessera voice agents on their real lines.

      +45%
      "We missed half our emergency calls after 6. Now every one gets answered, triaged and booked before I'd even have found my phone. Booked jobs are up 45%."
      Gareth PriceOwner, Price Electrical & Heating
      120/day
      "It takes over a hundred calls a day, books checkups and handles repeat prescriptions. Nobody waits on hold any more."
      Dr. Nadia HaddadPractice Manager, Willow Lane Surgery
      2x
      "The outbound agent qualifies our solar leads and puts the hot ones straight through to a closer. Our team's hit rate doubled."
      Sam WhitlockSales Director, Brightside Solar
      24/7
      "It books test drives, confirms service slots and reminds customers about recalls at any hour. Customers keep telling us how nice our new receptionist is."
      Chloe MartinService Manager, Kingsway Motors

      Ready to give your phone a night shift?

      Give us one number and your ten most common calls. We'll let you ring your own voice agent within a week.

      See pricing Book a call