Unlimited calls beat 30 calls and a per-call fee.
Smith.ai pairs AI with human receptionists and bills by the conversation. The entry plan is about $285/month for roughly 30 calls, then charges around $7–$9 for every call after. Even quick questions and spam can eat into that count.
OnCallClerk answers every call for a flat $29/month — no per-call meter, no allowance to blow past, and still a warm transfer to a human when it matters.
Flat $29/month · Unlimited calls · Human transfer included
What the per-call model adds up to
Smith.ai’s cost is driven by call count, not call length. Here’s the estimated monthly cost at three volumes — the base plan plus per-call overages beyond the first 30 — next to OnCallClerk’s flat rate.
Estimates as of 2026 based on Smith.ai’s published entry rate (~$285/month, ~30 calls) and a ~$8/call overage. Actual cost depends on plan and which calls count toward your total. OnCallClerk pricing is flat and does not vary with call volume. Smith.ai also offers a lower AI-only tier (~$97/month).
Smith.ai vs OnCallClerk
Two answering services, two very different ways of counting — and billing — your calls.
When Smith.ai is the better choice
Smith.ai is a strong product, and it’s the better fit if:
- 01You want a trained human doing detailed intake and lead qualification on every single call, and you price legal or professional matters high enough that per-call fees are trivial.
- 02Your call volume is low and steady enough that the included 30 calls comfortably cover you month to month.
- 03You value having a person build rapport on every conversation more than instant, always-on pickup.
But if a large share of your calls are routine — hours, directions, quick quotes, rebooking — paying $7–$9 for a human to handle each one is expensive for work AI resolves instantly, and reserving the human transfer for the calls that truly need it.
One flat plan, everything in it
No per-call accounting and no upsell for the essentials. Every OnCallClerk plan includes:
Every call answered, no counter
Spam, wrong numbers, quick questions, and busy Mondays are all answered at the same flat rate. Nothing counts against an allowance.
24/7 coverage by default
Nights, weekends, and holidays are handled instantly — no queue, no “next available agent,” and no after-hours premium.
Warm transfer to a human
When a caller needs a person, OnCallClerk screens and transfers the call to you or your team, then logs the full transcript — the safety net without the per-call bill.
Booking and CRM built in
Book appointments into your calendar and push caller details to your CRM automatically, so every lead is captured cleanly.
Weighing other answering services?
Smith.ai sits between AI and human. Here’s how the neighbours compare.
Premium US-based human answering billed per minute (~$329/month for 50 minutes). More personal, but the meter runs on every call.
True 24/7 human answering (~$329/month for 50 minutes) with solid field-service CRM integrations and a per-minute overage model.
Established 24/7 human service at ~$199/month for 75 minutes — a cheaper entry point than Smith.ai, still metered.
Our independent 2026 breakdown of 25+ human, AI, and developer answering options, including per-call and per-minute rates.
Smith.ai alternative FAQ
How does Smith.ai pricing work?
Smith.ai bills per call. The entry live-answering plan is about $285/month and includes roughly 30 calls; additional calls are billed at approximately $7–$9 each. Smith.ai also offers a lower-cost AI receptionist plan (around $97/month), but its flagship product is the human and AI-plus-human answering that’s priced per conversation. OnCallClerk charges a flat $29/month for unlimited calls, so the count never affects your bill.
What’s the difference between Smith.ai’s AI and OnCallClerk?
Smith.ai leads with human receptionists and offers an AI tier that hands off to those humans. Its pricing and workflow are built around that per-call, human-in-the-loop model. OnCallClerk is a purpose-built AI receptionist: it answers instantly, handles routine calls end to end, and warm-transfers to you when a human is genuinely needed — without a per-call charge each time it picks up.
Does the per-call model actually cost more?
It depends on volume. At very low call counts, Smith.ai’s included calls may be enough. But every missed-then-returned call, spam call, and quick “are you open?” question can count toward your total, and once you pass the allowance each call adds $7–$9. A business taking 80–150 calls a month often lands well into the hundreds. OnCallClerk’s flat rate removes that variability entirely.
Can OnCallClerk escalate to a human like Smith.ai?
Yes. OnCallClerk screens the call, handles the routine part, and warm-transfers to you or a teammate when the caller needs a person — then logs a transcript and pushes the details to your inbox or CRM. You keep the human-escalation safety net without paying a per-call fee on every conversation, including the ones AI could fully resolve.
Is Smith.ai or OnCallClerk better for law firms and agencies?
Smith.ai is popular with law firms that want trained humans doing qualified intake on every call and are comfortable with per-call pricing. OnCallClerk suits firms and agencies that want instant 24/7 pickup, consistent intake questions, and predictable cost — with a human transfer available for the calls that truly need one. Many teams run AI for first response and reserve human time for qualified matters.
How hard is it to switch from Smith.ai?
It’s fast. Sign up, walk through the setup wizard (it can even read your website to draft your agent), choose a voice, and forward your business number to OnCallClerk. You can keep Smith.ai active in parallel and cut over once you’re confident — most businesses are live the same day.
Stop counting calls. Start answering them all.
Spin up your AI receptionist in about ten minutes, forward your number, and pay one flat rate no matter how busy you get. Keep Smith.ai running alongside until you’re sure.
Flat monthly pricing · Unlimited calls · No credit card required