At a glance
Not published; demo and sales only (Capterra lists $240/mo, not on Callab's site).
Requires your own enterprise PBX or contact center; HIPAA and SOC 2 still in progress.
Zinng: works with any phone, $49 for 300 minutes, call transfers, 7-day free trial.
The short answer
Callab AI is a young Y Combinator company that adds AI voice agents to existing enterprise phone systems and contact centers (Avaya, Cisco, Mitel) over SIP. It's sold by demo and requires your own PBX, so it isn't built for a typical small business.
If you just need your business line answered, Zinng works with any phone and starts at $49 a month with a 7-day free trial.
What Callab AI offers (checked October 2026)
- Pricing: not published. The pricing page redirects to a Contact Sales form. Capterra lists $240 a month flat, but that isn't on Callab's site.
- Setup: it connects to your PBX as a SIP endpoint, configures a first agent and runs a controlled pilot; Callab says it can go live in about a week.
- Features: routing between AI agents, departments and live agents, one-click human takeover, CRM updates on every call, and batch outbound calling.
- Compliance: HIPAA and SOC 2 Type II are listed as in progress.
Callab AI (San Francisco, founded 2024, Y Combinator Spring 2026) has a team of seven and raised about $500K to $600K. Its one Trustpilot review (1 star) complains that a 2-3 week build ran months late while the subscription was already being charged.
Callab AI
Enterprise contact centers only
AI voice agents that plug into an existing enterprise PBX or contact center over SIP, sold by demo. No small-business plan or public pricing.
"They overpromise how fast they can develop, and we are several months into a 2-3-week development and still not completed."
Checked October 2, 2026 on callab.ai (no public pricing). Prices change; confirm before you buy.
Small-business alternatives compared
Entry plans side by side. Scroll sideways on a phone to see every column.
| Service | Starts at | Includes | Billing | Setup | Free trial |
|---|---|---|---|---|---|
| Callab AI | Not published | See card | Not published | Sales-led pilot | Demo only |
| Zinng | $49/mo | 300 minutes | Per minute + extra-minute buckets ($25 for 150) | Self-serve + free help | 7 days |
| Smith.ai AI Receptionist | Free | 25 calls | Per call | Self-serve + help | Free plan (25 calls) |
| Goodcall | $79/mo | 100 unique callers | Per unique caller | Self-serve | Not published |
| RingCentral AI Receptionist (AIR) | $49/mo | 100 minutes | Per minute | Self-serve | 14 days |
| Upfirst | $24.95/mo | 30 calls | Per call | Self-serve + help | 14 days, no card |
| Rosie | $49/mo | 250 minutes | Minute plans (auto-upgrade) | Self-serve | 7 days |
| Dialzara | $29/mo | 60 minutes | Per minute | Self-serve | 7 days |
| Phonely | Free | 100 minutes | Per minute | Self-serve | Free plan |
The best Callab AI alternatives for small businesses
1. Zinng: no PBX required
Zinng works with whatever phone you use today:
- $49 for 300 minutes or $99 for 700, with call transfers on every plan.
- Keep your number by forwarding or porting it, or get a new one.
- Live calendar booking on the $99 Pro plan (Google Calendar, Outlook, Cal.com, Calendly).
- Two-way texting, a website chat widget and 63 languages, with every call recorded and transcribed.
- Extra minutes in buckets: 150 for $25, 300 for $50, 600 for $100 or 1,200 for $200.
Zinng plans: $49 (300 minutes), $99 (700), $149 (1,000) and $249 (2,000), all with a 7-day free trial, free setup help and no contract.
Smith.ai AI Receptionist
Best for AI with live human backup
Per-call AI receptionist with a free tier; calls can be escalated to Smith.ai's live agents for $3 extra. Native Clio integration.
"I do appreciate that our calls get answered 24/7. Occasional missed calls generally go to a voicemail."
"They required a upfront payment at $2500 for a six month contract... we requested to cancel our contract... because the account is on a long-term plan, our policy does not allow..."
Checked October 2, 2026 on smith.ai. Prices change; confirm before you buy.
Goodcall
Best for customizable call flows
Self-serve AI phone agent with a call-flow builder, billed per unique caller with unlimited minutes. US only.
"Their on time Customer Services Their numerios Features best part it is easy to use"
"Service started out at $59 then no notice moved in $99 a month and then this last month they now they are charging me $130 a month with no notice."
Checked October 2, 2026 on goodcall.com. Prices change; confirm before you buy.
RingCentral AI Receptionist (AIR)
Best if you already use RingCentral
RingCentral's AI receptionist, sold standalone from $49/month for 100 minutes or as a $39 add-on to a RingEX phone seat. Extra minutes cost $0.50.
"Mikey yesterday provided us with Customer Service of the utmost Excellence when we had an urgent need with one of our self-storage locations"
"A word of advice: DO NOT USE THIS SERVICE. You may get a working number, but when you actually need customer service or help resolving an issue, good luck. I have been trying to cancel my service for over a year"
Checked October 2, 2026 on ringcentral.com. Prices change; confirm before you buy.
Upfirst
Best for every feature on every plan
Per-call AI receptionist with transfers, live booking, texting and 35+ languages on every plan, plus a free onboarding call.
"What I like best about Upfirst is their customer support and their willingness to keep improving the platform."
"It's not as personal as having a live receptionist, but it does what we need for now"
Checked October 2, 2026 on upfirst.ai. Prices change; confirm before you buy.
Rosie
Best for quick self-serve setup
Self-serve AI receptionist trained from your Google Business Profile and website. Live booking and transfers start on the $149 Scale plan.
"Rosie is the best AI answering service I've tried... I called the trial number and was surprised how well it answered queries about my business (Transistor), even questions it wasn't trained on."
Checked October 2, 2026 on heyrosie.com. Prices change; confirm before you buy.
Dialzara
Best for the lowest entry price
Per-minute AI receptionist from $29/month for 60 minutes; warm transfers, calendar sync and Spanish start on the $99 plan.
"Working with Adam and his AI phone system has honestly been one of the most impressive experiences we've had integrating technology into our real estate business."
"Customer service is terrible. Trying to even get a response is really hard."
Checked October 2, 2026 on dialzara.com. Prices change; confirm before you buy.
Phonely
Best free plan to try
Per-minute AI phone agent with a free plan (100 minutes), unlimited simultaneous calls and 50+ languages; Y Combinator-backed.
Checked October 2, 2026 on phonely.ai. Prices change; confirm before you buy.
Frequently asked questions
How much does Callab AI cost?
Callab AI doesn't publish pricing; its pricing page redirects to a Contact Sales form that asks how many contact-center agents you have. Capterra's listing shows a starting price of $240 a month flat, but that figure isn't on Callab's site. One Trustpilot reviewer describes a setup fee plus a subscription.
Does Callab AI work without a PBX?
No. Callab AI plugs in as a SIP endpoint to your existing PBX, SBC or contact-center system (it names Avaya, Cisco UCM and Mitel). It doesn't provide a business phone number on its own.
Is Callab AI HIPAA compliant?
Not yet. Callab AI lists HIPAA and SOC 2 Type II as in progress, and says healthcare is on its roadmap once HIPAA compliance is complete.
What is the best Callab AI alternative for a small business?
Zinng works with any business phone through forwarding or porting, no PBX needed: $49 a month for 300 minutes, call transfers on every plan, two-way texting and a 7-day free trial.
Sources: callab.ai, Callab's Y Combinator page, Capterra and Trustpilot, checked October 2, 2026. No affiliate links. Compare more on our AI receptionist alternatives page.
