Sell Whisper AI vs LobbyStack

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Sell Whisper AI compared with LobbyStack
Detail	Sell Whisper AI	LobbyStack
What it does	AI customer support and sales platform that deploys agents across 13 channels	AI receptionist software that answers calls, books appointments, and transfers urgent calls to your team
Stage	Startup	Not given
Founded	2026	Not given
Based in	EG	Not given
Pricing model	Freemium	Freemium
Pricing	Free plan with 50 conversations/month, 1 agent, Claude Haiku 5.5, and access to Chat Widget, Help Page, Agent Chat Page, WordPress. Starter at $39/month with 500 conversations, 3 agents, and all 4 AI providers. Pro at $149/month with 2,000 conversations and 5 agents. Business at $349/month with 10,0	Free: 30 voice minutes for 14 days. Starter: $30/month or $288/year with 150 voice minutes, then $0.20/min overage. Pro: $100/month or $960/year with 500 voice minutes, then $0.18/min overage. Enterprise: Custom pricing. Transfer attempts and SMS alerts cost $0.02 each for overages.
Key features	No-code AI agent builder with template selection Knowledge base from documents, website pages and written answers Deploys to 13 channels including chat widget, WhatsApp, Instagram, Messenger, Slack, Shopify, WooCommerce, Zendesk, Salesforce, WordPress, Help Page, Agent Chat Page, and API Human handoff with full conversation context Lead collection and scoring by engagement and intent Conversation analytics with sentiment analysis and top topics Choice of 4 AI providers: Claude, ChatGPT, Google Gemini, Grok Multi-tenant platform with role-based access and two-factor authentication Data encryption in transit (TLS 1.3) and at rest (AES-256) 6 native integrations: WooCommerce, Cal.com, Calendly, HubSpot, Zendesk, Salesforce	24/7 call answering in 70+ languages Appointment booking and calendar integration with Google Calendar, Cal.com, and Calendly Call transfer to team members based on rules Call summaries and transcripts Email and SMS notifications for messages Knowledge base from website and document import Lead qualification and intake Customizable AI behavior and business rules Spam filtering and calls under 10 seconds excluded Open source code available on GitHub under MIT License
What makes it different	AI-first platform built from scratch, not a wrapped third-party tool or no-code prototype Live in production serving businesses globally with 13 deployment channels FastAPI backend with Next.js frontend and real-time WebSocket messaging Vector search with PostgreSQL and pgvector for accurate, grounded answers from your knowledge base	Open source with self-hosting option for data control Natural conversation handling without rigid phone trees Books appointments while caller is on the line Transparent usage-based pricing with no spam call charges
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	6 no change since last check
Trust Flow (Majestic)	0	3
Citation Flow (Majestic)	14	26
Referring domains (Majestic)	2	32

5 details filled in for both companies.

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