Overview
Pearl (by NLPearl) is an AI voice agent platform that automates inbound and outbound phone interactions and executes real-time actions such as transfers, calendar scheduling, sending email/SMS, and calling external APIs. It is positioned as a no-code conversation-flow builder with developer-friendly APIs and is targeted at call centers, sales, support, hospitality, healthcare, ecommerce, utilities, insurance, debt management, real estate, government, airlines, and similar industries. Key capabilities include a real-time voice agent, call recording and full transcripts, multilingual agents, templated personalization (placeholders like CustomerName, OrderProduct), actions that call external APIs (examples such as cart.Add), calendar scheduling, call transfers (SIP REFER), analytics and success triggers. The platform provides a REST-style API for outbound calls and real-time triggers, developer documentation with Make Call examples and guides for custom VoIP/SIP integration, and options for cloud and on-prem deployment for legacy or specialized environments. Pricing is sales-driven and gated; the public pricing page does not present fully itemized tiers. The FAQ indicates a free trial is available and documents that added "agents" can start at $100/month each as an example of how agent billing works. For concrete costs and enterprise details (SLA, concurrency limits, per-minute pricing, on-prem pricing, volume discounts) the vendor requests contacting sales or booking a demo.
Key Features
Real-time voice agent
AI-driven real-time voice agent for inbound and outbound calls with live decisioning and triggers.
Call recording & transcripts
Automatic call recording and full transcripts for compliance, review, and analytics.
Multilingual support & voice variants
Support for roughly ~20 languages/locales and multiple accents; can configure multiple language/voice variants per Pearl and switch mid-call when configured.
No-code conversation builder + developer APIs
No-code builder for conversation flows plus REST-style APIs for programmatic integration, outbound calls, and real-time triggers.
Actions & external API calls
Actions that call external APIs during calls (examples in docs include actions like cart.Add) and integrations with CRMs and other systems.
VoIP / SIP integration
Custom VoIP/SIP integration guide with TLS/SRTP recommendations, SIP trunk configuration, auth options, SIP domain issuance, and SIP REFER transfers.



Who Can Use This Tool?
- Call centers:Automate high-volume inbound/outbound calls, routing, and agent augmentation with analytics.
- Sales & Support teams:Outbound dialing, lead qualification, booking, and CRM-integrated workflows.
- Enterprises / Regulated industries:On-prem or cloud deployment options, compliance features, and secure VoIP/SIP integrations.
Pricing Plans
Sales-driven, industry-tailored plans; public pricing is gated and requires contacting sales or booking a demo for detailed quotes.
- ✓Custom SLAs and enterprise negotiation
- ✓Volume discounts and tiered per-minute options
- ✓On-prem deployment option (where applicable)
- ✓Custom concurrency and scaling agreements
FAQ describes that added "agents" can start at $100/month each; listed as an example of agent billing rather than a full public tier.
- ✓Per-agent monthly billing example
- ✓Used to illustrate how agent charges are applied
Pros & Cons
✓ Pros
- ✓No-code builder for rapid creation of conversation flows
- ✓Developer-friendly REST APIs and documented examples
- ✓Robust VoIP/SIP integration options with recommended security (TLS/SRTP)
- ✓Multilingual support and the ability to switch languages mid-call
- ✓Call recording, transcripts, analytics, and real-time triggers
✗ Cons
- ✗No fully transparent, itemized public pricing tiers; pricing is gated behind sales
- ✗Enterprise specifics (SLA, volume discounts, on-prem pricing) handled via sales rather than public docs
- ✗Concrete costs require demo/signup to obtain
Compare with Alternatives
| Feature | Pearl (by NLPearl) | TalkStack | ZenCall.ai |
|---|---|---|---|
| Pricing | $100/month | N/A | N/A |
| Rating | 8.0/10 | 8.1/10 | 8.1/10 |
| Real-time Handling | Yes | Yes | Yes |
| Outbound Dialer | Yes | Partial | Partial |
| No-code Builder | Yes | Yes | No |
| API & Extensibility | Yes | Yes | Yes |
| SIP/VoIP Support | Yes | Partial | Partial |
| Voice & Language Variants | Yes | Yes | Yes |
| Analytics & Reporting | Yes | Yes | Yes |
Related Articles (4)
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Explores how Pearl AI phone agents transform customer support with automation, speed, and cross-industry impact.

