Comparison

Konvex vs enterprise AI agencies vs DIY builds.

Honest, side-by-side on the things that matter when you’re picking an AI receptionist: setup time, total cost, voice quality, integration depth, and who picks up the phone when it breaks.

Setup time
Total cost to launch
Monthly run cost
Voice quality
Integration depth
Support SLA
Enterprise AI agency 4–8 weeks $40K – $120K build $3K – $8K / mo Variable — agency-dependent Deep (CRM/Calendar/voice/DM) Business hours, ticket queue
DIY developer build 8–16 weeks $15K – $40K in dev time $800 – $2K / mo OpenAI + telephony Telco-grade — depends on dev Whatever your dev wires up None — you’re on your own
Konvex 5–7 days $3K – $10K setup $500 – $2,500 / mo retainer Aria — production-grade voice, sub-second response Full-stack — web + voice + DM + calendar + CRM 24/7 operator + monthly tuning

* Ranges shown reflect typical quotes received by Konvex prospects in 2025–2026. Enterprise ranges vary by integration depth; DIY assumes a mid-senior AI engineer at Australian contractor rates. Individual quotes will vary.

Accounting principals
Why a 4-partner Brisbane practice chose Konvex over an enterprise build
Speed

The firm needed to be live before EOFY. The enterprise agency quoted a 6-week build, with a “discovery sprint” on top. Konvex had Aria qualifying after-hours enquiries inside five business days — four weeks earlier than the agency could promise.

Cost

The enterprise quote landed at $92K for setup, plus an estimated $4K/month run cost with quarterly optimisation retainers. Konvex’s setup was a fraction of that, and the monthly retainer is flat — no surprise uplift fees when traffic spikes.

Outcome

After-hours leads that previously hit voicemail now get qualified and booked into a partner’s calendar within 90 seconds. The partners stopped triaging voicemail at 8am. The first month recovered more than the setup cost in billable enquiries.

See Konvex for Accounting →
Common path
Law firm principals
Why a Melbourne family-law boutique chose Konvex over a custom build
Sensitivity

Family-law enquiries arrive during high-emotion moments — late evening, weekends, after a triggering event. The boutique needed intake that felt human, not a phone tree. Aria was tuned for that tone in the first build week, with no scope-creep delay.

Urgency triage

Aria flags urgency indicators (DVO, child-safety concerns, urgent filing deadlines) and triggers an immediate solicitor alert for those matters. Routine enquiries queue for next-day callback with a full intake summary attached. The firm has not lost a single after-hours matter to no-response since going live.

Compliance

The boutique was wary of feeding confidential matter details into a generic AI tool. Konvex operates under an Australian Privacy Principles-compliant intake flow with no matter details stored longer than required to schedule the call — documented up front, not negotiated at delivery.

See Konvex for Law Firms →
Trade & real-estate operators
Why a sole-trader sparky and a 3-person agency both chose Konvex over DIY
DIY is the realistic alternative

For a solo electrician, plumber, or small real-estate agency, the actual alternative to Konvex is not “hire an enterprise agency” — it’s building it yourself between jobs. Konvex turns that six-to-ten-week side project into a five-day deployment, with Aria live on the website before the next BAS is due.

Total cost

A DIY build on OpenAI + Telnyx/Twilio + a part-time developer tops out near $40K once you tally calendar integration, CRM handoff, and the months of iteration to get the voice quality right. Konvex’s monthly retainer is less than the cost of one month of a senior freelancer — and you’re not on the hook when the API changes.

Voice quality out of the box

DIY voice stacks usually end up using a default OpenAI voice with a stock prompt — the caller can hear it instantly and hangs up. Aria ships with a tuned voice profile, sub-second response, and a handoff flow that won’t scare a lead off. You can sound enterprise-grade without building it yourself.

See Konvex for Real Estate →
Common Questions
Why not just hire a developer to build this?

You can — and for some technical buyers, that’s the right call. But a production-grade AI receptionist is six to ten weeks of a senior engineer’s time, plus ongoing maintenance when OpenAI, Twilio, or your CRM changes an API. Konvex is what you get when that engineering work is already done, tested across hundreds of conversations, and kept up to date for you.

Won’t an enterprise AI agency give us something more bespoke?

Sometimes. If your requirements include custom model training, on-prem deployment, or integration with internal systems no one else uses, an enterprise buildout makes sense. For most Australian professional-services firms, the “bespoke” parts an agency would build — qualification flows, calendar booking, CRM handoff — are already what Konvex does as standard. You pay for the agency’s discovery process, not for the features.

How is Konvex actually cheaper than a custom build?

The unit economics. Konvex’s voice pipeline, qualification flows, calendar/CRM integrations, and tuning tooling are amortised across many clients. You pay for the outcome you use, not for a one-off rebuild of the same plumbing every agency quotes from scratch. Setup is fixed-price; the monthly retainer covers hosting, monitoring, and ongoing tuning — not just inference costs.

What if I outgrow Konvex?

Most clients move up, not out. Konvex’s package tiers (AI Receptionist → Lead Qualifier + Booker → Full Revenue Stack) are designed so you can graduate from a single-channel deployment to a multi-channel revenue engine without changing vendors. If you genuinely need a custom build later, we’ll help you migrate — we just haven’t had a client need to yet.

Is Konvex really live in 5–7 days, or is that marketing?

It’s real, with one caveat: “5–7 days” assumes the strategy-call intake has been completed and we have your qualification logic, calendar access, and CRM endpoint ready to wire. From deposit-to-live for a single-channel AI Receptionist is consistently under 10 business days. Multi-channel and complex integrations land at 2–3 weeks. We give you the actual timeline on the strategy call before you commit.

Your turn

Stop comparing. Start recovering leads.

Book a 15-minute strategy call. James will walk through your specific revenue leak and show you what Konvex would look like on your site before you spend a cent on either build.

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