PolyAI Agent Builder

What it does

PolyAI's Agent Builder takes a plain-language description of a customer use case and produces a voice dialog agent with a knowledge base, conversation tracks and guardrails, which can then be tested live, refined and deployed. Developers can instead use the Agent Development Kit, a CLI and Python package that connects to a GitHub repository so agent changes are versioned, reviewed and pushed like application code. Output is a working voice or multichannel agent handling calls, and the ADK supports runtime hooks that pass third-party data, such as caller history, into the conversation.

Teams can describe a use case, test the agent in a shareable environment, then use call data to refine it before production. Developers can edit flows and functions locally, connect backend APIs and use automated tests in a code-review workflow. The Agent Builder and ADK are two ways into the same dialog platform. Model choice and integrations depend on the deployment, with business users and engineers able to work on a shared agent configuration.

PolyAI Agent Builder suits customer-engagement teams and developers building voice or multichannel agents. Access begins through the web studio or a discussion with sales, followed by testing and configuration for the intended systems and channels. Platform use is quoted and metered by connected time. PolyAI’s separately priced model API is a different purchase, so its introductory credits and minute rate should not be used to estimate the cost of a complete Agent Builder deployment.

What it can do

• Natural-language agent creation that configures the agent, knowledge base, conversation tracks and guardrails.
• Live testing and analysis of call data with iterative refinement.
• Agent Development Kit (ADK) CLI and Python package for local, IDE-based development with Git versioning.
• Shareable zero-setup test environment across channels.
• Dialog-RSN-1 model access via API, billed per connected minute.
• Custom functions that call backend APIs during calls, and automated test suites runnable in CI/CD.

Works with

• Amazon Web Services
• Five9
• NICE
• Salesforce
• Twilio
• Verizon Business
• Zendesk

Example workflows

Build a voice agent from a description

Illustrative example. Input: a plain-language description of the customer use case. Steps: the builder describes the need, the platform configures the agent, knowledge base and tracks, the builder tests live and reviews call data, then refines. Output: a tested dialog agent ready for deployment.

Develop an agent from an IDE

Illustrative example. Input: agent flows, functions and voice configuration in a local GitHub repository. Steps: edit locally with an IDE and AI assistant, run the test suite from the CLI, push via poly push in CI. Output: versioned agent changes visible in Agent Studio for review and staging.

Before you choose

• Confirm the platform quote and included channels, telephony and support.
• Model-only API pricing and promotional credits do not establish the complete platform cost.
• Test actions, escalation and connected-system permissions before going live.

Listed under

• Support
• Voice and phone agents
• Call automation
• Contact center
• Conversational AI
• Customer service
• Developers
• Enterprise

Get started

Free sign-up to start building; sales demos are also offered.

1. Sign up at studio.poly.ai and describe your use case in plain language.
2. Use the shareable test environment to validate agent behavior before production.
3. For developers, install the PolyAI CLI, connect a GitHub repository and follow the ADK docs.

Platform pricing is quoted, with ongoing agent use priced per connected minute and billed per second. Confirm the complete deployment scope. The separately priced Dialog-RSN-1 model API excludes telephony and orchestration and is not the Agent Builder subscription.

PolyAI Agent Builder doesn’t publish prices. You get a quote by contacting sales. See their pricing page ↗

Sources for this overview

Product pages, documentation, and pricing checked 29 Oct 2026. Each source supports part of the overview; availability and prices can change.

• Dialog Studio: Build Enterprise Voice AI Agents | PolyAI ↗poly.ai
• PolyAI Opens Its Agentic Dialog Platform to Every Builder ↗poly.ai
• Pricing - PolyAI ↗poly.ai
• PolyAI for Developers: Build Voice AI Dialog Agents ↗poly.ai

Company website

poly.ai: product, pricing and policy pages

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Human review

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knowledge_base

Last checked 29 Oct 2026. Every field keeps its source and date; unknown means we couldn’t confirm it.