SpecialistDeeply integrated with Salesforce CRM data for enterprise service, but tied closely to the Salesforce ecosystem.
SpecialistDeeply integrated with Salesforce CRM data for enterprise service, but tied closely to the Salesforce ecosystem.
PolyAI records 319,894 monthly visits with +24.3% month-over-month growth and Contact for Pricing pricing. Quantz® records 0 monthly visits with 0% growth and contact pricing.

A proactive voice AI agent that runs on its own servers for instant, private conversations.
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | poly.ai | quantz.thinkxinc.com |
| Pricing Model | Contact for Pricing | contact |
| Monthly Visits | 319.89K (319,894) | 0 (0) |
| MoM Traffic Delta | +62.54K (+24.3%) | 0 (0%) |
| Primary Market & Share | 🇺🇸 United States (23.1%) | 🌐 Global (—) |
| Direct Visits / mo | 105.94K | 0 |
| User Rating | 4.4 | 4 |
| Supported Platforms | Website | Website |

Enterprise voice AI that resolves customer conversations
Build and run the same agent across phone calls, SMS, webchat and messaging channels from a single Dialog Studio workspace.
Dialog-RSN-1 handles audio natively with sub-300ms responses and strong turn-taking, while Dialog-Raven-3.5 covers text-based and multilingual dialog.
Assemble flows, tools and brand voice in Dialog Studio with drag-and-drop or code, and let Wren assist in designing and optimising agents.
Pre-built connectors, a self-serve Connect Portal and open APIs let agents read and write in CRMs, booking systems, billing platforms and more.

A proactive voice AI agent that runs on its own servers for instant, private conversations.
ThinkX describes Quantz as a completely private, flexibly programmable and ultra-fast conversational agent foundation system built on a proprietary codebase of about 670,000 lines.
The realtime engine is designed to deliver the substantial content of an answer immediately, rather than stalling the caller with filler acknowledgements while it prepares the reply.
Rather than only chatting, the agent pursues defined objectives autonomously, making it suited to service, sales and lead-generation calls.
Because it runs fully on ThinkX's own servers, the company claims a large cost advantage over systems that combine third-party APIs with cloud infrastructure.
SpecialistDeeply integrated with Salesforce CRM data for enterprise service, but tied closely to the Salesforce ecosystem.
SpecialistDeeply integrated with Salesforce CRM data for enterprise service, but tied closely to the Salesforce ecosystem.
SpecialistIndustry-leading ultra-realistic voice synthesis and cloning, but requires custom building your own telephony integration layer.
SpecialistIndustry-leading ultra-realistic voice synthesis and cloning, but requires custom building your own telephony integration layer.

Comprehensive multi-channel bot builder, but less tuned for high-volume enterprise call center handling than PolyAI.

AI communication platform for sales and support teams

Excellent omnichannel enterprise customer service agent orchestration, but less specialized purely in telephony voice calls than PolyAI.

SpecialistProvides a superior visual canvas for designing voice workflows, but requires third-party telephony setup compared to PolyAI.

Enterprise voice AI agents that handle your most regulated phone calls
Enterprise voice AI agents that handle your most regulated phone calls

Free / Open-sourceEnterprise AI voice agents that work inside your phone system
Free / Open-sourceEnterprise AI voice agents that work inside your phone system

Strong enterprise conversational automation across voice and chat channels, but has a steeper implementation curve.
Strong enterprise conversational automation across voice and chat channels, but has a steeper implementation curve.

Multi-channel customer support agent platform with event telemetry, but less focused purely on voice telephony.
Multi-channel customer support agent platform with event telemetry, but less focused purely on voice telephony.

Free / Open-sourceAI voice agents that answer every business call
Free / Open-sourceAI voice agents that answer every business call

Free / Open-sourceAI phone agents that answer, qualify and route every call 24/7