Pricing model: per call versus per minute
Smith.ai charges per call. Its Starter plan is $300 per month for 30 calls, Basic is $810 for 90 calls, and Pro is $2,100 for 300 calls, with overage between $8.50 and $11.50 per call depending on tier. The AI-first and human-first plans share the same price structure. Setup is free and service is month to month with a 30-day money-back guarantee.
SentraVoice charges by plan with included minutes and messages. Starter Inbound is $299 per month for 100 minutes and 500 SMS or email messages. Professional is $899 for 500 minutes, 1,000 messages, two phone lines and four branded agents. A busy line that takes 300 calls a month of about two minutes each uses roughly 600 minutes: on SentraVoice that is the Professional plan plus one add-on block, on Smith.ai it is the $2,100 Pro plan.
| At a glance | SentraVoice | Smith.ai |
|---|---|---|
| Entry plan | $299 / month, 100 minutes | $300 / month, 30 calls |
| Mid plan | $899 / month, 500 minutes, 2 lines | $810 / month, 90 calls |
| High volume | $3,500 / month, 3,500 minutes | $2,100 / month, 300 calls |
| Overage | Minute and message add-on blocks | $8.50 to $11.50 per call |
| Who answers | AI agents trained for your industry | AI-first or human-first plans |
| Channels | Voice, SMS, email, social DMs | Phone, web chat and SMS products |
| Outbound calling | Included on Outbound and Professional plans | Separate outreach campaigns |
| Setup | Built by SentraVoice, live within 24 hours | Self-serve onboarding |
| Contract | Month to month, no setup fee | Month to month, no setup fee |
Smith.ai pricing and plan details are taken from Smith.ai's public pricing page as of September 2026. Smith.ai is a trademark of its owner and is not affiliated with SentraVoice. Check their site for current terms.
When Smith.ai is the better fit
Choose Smith.ai if you specifically want a North American human receptionist on every call and your volume is low enough that per-call pricing stays predictable. A solo practitioner taking 30 calls a month gets a real person for about $10 a call, and some clients will always prefer that.
When SentraVoice is the better fit
Choose SentraVoice if you are past the point where per-call pricing makes sense, if you want the same agent handling texts and emails as well as calls, or if you want outbound follow-up on the same platform. SentraVoice agents are trained for one industry and one job, they qualify with your intake criteria rather than a generic script, and you get a summary by SMS and email before the caller has put the phone down.
- Built for you, not by you. We configure every agent with your business name, tone, intake questions and scheduling rules, then keep tuning it after launch. There is no prompt builder to learn.
- Your existing number. Calls forward from the line your customers already know. Always on, overflow only, or after hours only.
- Every channel. Voice, SMS, email and social DMs, inbound and outbound, from one platform and one plan.
- Qualification and booking, not message taking. The agent asks your intake questions, offers only the calendar slots you marked open, and books the appointment on the call.
- A record of every interaction. SMS and email summary within seconds of hang-up, plus the recording and transcript in your dashboard.
- Live within 24 hours. No setup fees, month to month, cancel anytime.
SentraVoice plans
| SentraVoice plan | Monthly | Minutes | Messages | Lines | Branded agents |
|---|---|---|---|---|---|
| Starter Inbound | $299 | 100 | 500 | 1 | 3 |
| Starter Outbound | $499 | 100 | 500 | 1 | 4 |
| Professional | $899 | 500 | 1,000 | 2 | 4 |
| Enterprise | $3,500 | 3,500 | 10,000 | 2 | 7 |
Every plan includes call recording and transcription, SMS and email summaries, and at least one CRM or calendar integration. Extra minutes, messages and lines are available as add-ons. Full detail on the pricing page.