Open-Source AI Phone Receptionist

LobbyStack is an open-source AI receptionist platform for small businesses. It answers phone calls, books appointments, handles appointment changes, a…

In plain English

LobbyStack is an open-source AI receptionist for small businesses like clinics and salons. It answers calls, books and changes appointments, and passes calls to a person when needed. Businesses pay a monthly plan. TrustMRR shows about $175 a month in recurring revenue. The AI takes the calls, while staff handle the hard ones.

Automation80%

Startup costNot disclosed

Time to first $Not disclosed

Monthly range*$175 MRR

~$175 MRR; $182 verified revenue last 30 days (TrustMRR/Polar, Oct 29, 2026)

DifficultyHard

SourceTrustMRR - LobbyStack ↗

Operator: Raphaël M.

Verified

Revenue independently checked: documents reviewed by a publication, or a public dashboard.

TrustMRR Polar-verified (~$175 MRR, $182 last 30 days, ~4 customers) ↗

Not disclosed.

The tool stack

Polar ↗

4% + 40¢ per transaction

Payments / merchant of record

Whisper ↗

Pay per minute (API) or free self-hosted

Speech-to-text

Twilio ↗

Pay per message/minute

SMS / voice

Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.

Step-by-step setup

Capture calls, voicemails or speech.
Transcribe and summarize with AI.
Route or reply automatically, human for edge cases.
Monthly plans per seat or line.

What's automated vs. the human 20%

The machine does

Core AI generation/analysis
Billing and onboarding

You still do

Product quality and support
Distribution and marketing
Compliance and edge cases

Overview

LobbyStack is an open-source AI receptionist platform for small businesses. It answers phone calls, books appointments, handles appointment changes, and transfers calls to a person when needed. It is built for clinics, salons, repair shops, local service companies, restaurants, and any business that loses revenue when nobody is available to answer the phone. LobbyStack gives teams a modern AI front desk that can be hosted in the cloud or self-hosted on their own infrastructure.

Operator: Raphaël M.. Category on TrustMRR: Customer Support. Founded: 2026-04-09. Website: https://lobbystack.com/

Estimated split: about 80% of the work automated, 20% human.

Realistic income

TrustMRR (checked Oct 29, 2026) shows about $175 MRR and $182 in Polar-verified revenue over the last 30 days, $533 verified over its tracked history. This is one operator’s result, often after months or years of work, and doesn’t predict yours. Check the live listing — numbers change.

Risks

Call-recording consent laws vary by region.
Telephony and speech costs scale with use.
Startup cost and time to first dollar are not disclosed.

*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.

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