Does PolyAI Voice Assistant have an API?

Yes, PolyAI Voice Assistant offers an API.

What platforms does PolyAI Voice Assistant support?

PolyAI Voice Assistant is available on Web App.

What are the limitations of PolyAI Voice Assistant?

Pricing is not published anywhere on the homepage, so budget cannot be assessed without a sales conversation. The platform is aimed squarely at enterprise contact centers; small teams and solo builders will find the sales-led model and scope heavy. Benchmark claims rely partly on PolyAI's own Dialog-Eval and vendor blog comparisons, so independent validation is limited.

PolyAI Voice Assistant

Name: PolyAI Voice Assistant
Author: PolyAI Voice Assistant

Dialog agents that resolve enterprise calls end to end.

Intermediate API

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Screenshot of PolyAI Voice Assistant, Dialog agents that resolve enterprise calls end to end

What is PolyAI Voice Assistant?

PolyAI Voice Assistant is an AI calls tool. PolyAI is an enterprise voice AI platform for contact centers. Its Dialog Studio lets teams build agents that handle calls and messages end to end, act in back-end systems through integrations and APIs, and run on PolyAI's own audio-native models.

PolyAI is an enterprise voice AI platform built around what the company calls agentic dialog: voice and messaging agents that do more than answer questions. They carry context across a conversation, call tools inside your own systems, and finish tasks such as changing a booking, verifying a caller or updating a record without handing the caller to a human. The homepage pitches this at contact centers and brands with high call volumes, and the customer logos range from retail and utilities to banking and restaurants. The build layer is Dialog Studio, a browser workspace where flows, tools and brand voice live together. The homepage stresses that teams can start no-code and move to full code without switching platforms, and Wren acts as an in-studio assistant for designing, building, testing and continuously optimizing agents. For developers there is an agent development kit, documented APIs and a CLI, so the same agent can be shipped from a terminal or embedded in existing services. A review workflow holds changes until someone approves them, with test results shown alongside the drafted answer. The underlying models are PolyAI's own. Dialog-RSN-1 is the flagship audio-native model, which reasons over raw call audio for turn-taking, recognition and response in one pass, quoted at under 300ms in production with 89.8 turn-taking accuracy and a 3.7% word error rate. Dialog-RAVEN-3.5 handles text-based dialog for webchat, SMS and multilingual use, with cascade latency around 280 to 600ms. Both are positioned as alternatives to general-purpose LLMs, and PolyAI publishes its own Dialog-Eval benchmark and comparative blog posts to make that case. Operationally, the platform advertises 99.994% uptime over the trailing twelve months and 100M+ calls a year, with data residency options in the US, UK, EU and APAC. Security credentials listed include SOC 2 Type 2, ISO 27001, PCI DSS and GDPR, plus SIP/TLS, SRTP, mTLS, SSO and RBAC. Compared with DIY stacks assembled from a speech-to-text vendor, an LLM and a telephony layer, PolyAI sells a single governed pipeline with a self-serve Connect Portal and pre-built integrations into tools such as Zendesk, ServiceNow, Twilio, Teams, Slack, Zoom, NICE and Dropbox.

How do you use PolyAI Voice Assistant?

1Book a demo or start in the Studio
Decide between a guided enterprise evaluation and self-serve building. The demo route connects you with PolyAI's team for scoping; the Studio route opens a free workspace.
2Create your first agent in Dialog Studio
Open the start-building flow and define the agent's purpose, brand voice and core conversation paths. Prompts and project context help shape the initial design.
3Connect your back-end systems
Use the pre-built integrations and Connect Portal to link the tools the agent must query or update, such as ticketing, CRM, scheduling or messaging platforms.
4Review the Dialog-RSN-1 model details
Understand how the audio-native model handles turn-taking, recognition and response in one pass, and what latency to expect before you commit to voice.
5Wire up custom logic with the ADK and APIs
For flows that go beyond the visual builder, use the agent development kit and API endpoints to add custom tools, then ship changes from the CLI.
6Complete the security review before launch
Check certifications, encryption, data residency and PII handling against your own compliance requirements, and confirm guardrail and human-in-the-loop settings.

Pros and cons

Pros

Agents can take real actions in back-end systems instead of only answering questions, which suits bookings, verification and account tasks.AI
Own dialog models with published latency, turn-taking accuracy and word error rate figures, plus an open benchmark for comparison.AI
Unusual operational transparency for the category: 99.994% uptime, 100M+ annual calls and 10,000 concurrent capacity stated on the homepage.AI
Strong compliance posture with SOC 2 Type 2, ISO 27001, PCI DSS and GDPR, and data residency in the US, UK, EU and APAC.AI
No-code studio path with a documented route to full code, APIs, ADK and CLI for engineering teams.AI

Cons

Pricing is not published anywhere on the homepage, so budget cannot be assessed without a sales conversation.AI
The platform is aimed squarely at enterprise contact centers; small teams and solo builders will find the sales-led model and scope heavy.AI
Benchmark claims rely partly on PolyAI's own Dialog-Eval and vendor blog comparisons, so independent validation is limited.AI
Feature detail for the Studio free tier is thin on the homepage, leaving unclear which channels or volumes a trial actually covers.AI
Multi-channel strength is split across two model families, so buyers need to confirm which model backs each channel they plan to use.AI

How much does PolyAI Voice Assistant cost?

Free trial

A free Studio entry point is available through the start-building link, but the homepage does not state its limits, channels or call volumes.

Learn more

Integrations

Pre-built links to Microsoft Teams, Slack, Zoom, ServiceNow, Zendesk, Twilio, NICE and Dropbox, plus a self-serve Connect Portal and open APIs for systems not on that list.

Learn more

Features

Dialog Studio for building agents with flows, tools and brand voice; Wren, an in-studio assistant for design, testing and optimization; PolyAI's own Dialog-RSN-1 (audio-native, under 300ms) and Dialog-RAVEN-3.5 (text and multilingual) models; multi-channel deployment across voice, SMS, WhatsApp, web chat, email and in-app; approval-gated reviews; an agent development kit, APIs and CLI; and security controls including PII redaction and human-in-the-loop.

Learn more

Frequently asked questions about PolyAI Voice Assistant

Does PolyAI Voice Assistant offer a free trial?
A free Studio entry point is available through the start-building link, but the homepage does not state its limits, channels or call volumes.
Does PolyAI Voice Assistant have an API?
Yes, PolyAI Voice Assistant offers an API.
How do you use PolyAI Voice Assistant?
The walkthrough on this page covers 6 steps: 1. Book a demo or start in the Studio 2. Create your first agent in Dialog Studio 3. Connect your back-end systems 4. Review the Dialog-RSN-1 model details 5. Wire up custom logic with the ADK and APIs 6. Complete the security review before launch.
What platforms does PolyAI Voice Assistant support?
PolyAI Voice Assistant is available on Web App.
What does PolyAI Voice Assistant integrate with?
Pre-built links to Microsoft Teams, Slack, Zoom, ServiceNow, Zendesk, Twilio, NICE and Dropbox, plus a self-serve Connect Portal and open APIs for systems not on that list.
What are the limitations of PolyAI Voice Assistant?
Pricing is not published anywhere on the homepage, so budget cannot be assessed without a sales conversation. The platform is aimed squarely at enterprise contact centers; small teams and solo builders will find the sales-led model and scope heavy. Benchmark claims rely partly on PolyAI's own Dialog-Eval and vendor blog comparisons, so independent validation is limited.