Voiceflow

Visual Workflow Builder

Voiceflow's Workflow Builder is a collaborative drag-and-drop, no-code canvas for building advanced AI agent conversation logic. Teams can create orchestrated sequences of conversational steps, integrate hardcoded and AI-powered logic, and test prototypes in real-time across the full build lifecycle.

Knowledge Base (RAG)

Teams can train AI agents on business data — including Zendesk help articles, sitemaps, PDFs, and internal docs — using a scalable vector database. The Knowledge Base supports multi-LLM models, lets users tweak temperature and system prompts, and offers instant preview of responses before deployment.

Agent CMS (Content Management System)

The Agent CMS centralizes all agent content — including LLM prompts, variables, intents, entities, functions, and knowledge sources — in a single place for large-scale management. Teams can organize content into folders, manage variable presets across production agents, and train NLU models from one unified interface.

Multi-LLM & NLU Support

Voiceflow is model-agnostic, supporting the latest large language models (GPT, Claude, Gemini, Llama, Grok) alongside traditional NLU providers so teams can avoid vendor lock-in. Users can switch models, adjust parameters, and combine deterministic flows with generative AI responses within the same agent.

Developer Toolkit & API Library

Voiceflow offers a comprehensive API-first developer toolkit, including a Dialog API, Functions (custom JavaScript integrations), and a CMS API for dynamically querying and deploying agent content. Developers can build custom interfaces, integrate any third-party service, and extend agents beyond the no-code canvas.

Live Agent Hand-Off

Agents can seamlessly transfer conversations to live human agents using Voiceflow's open-source chat widget and custom action step, with full conversation context passed to the receiving platform. Native integrations support Zendesk, Intercom, and other live chat platforms.

Voice AI Agent Support

Voiceflow supports building and deploying voice AI agents for phone channels, integrating with telephony providers like Twilio, Amazon Connect, and VAPI to handle inbound calls, understand caller intent, automate workflows, and route conversations to human teams. Voice agents operate with sub-300ms latency.

300+ App Integrations

Voiceflow connects agents to over 300 apps and software tools across CRM/Sales (Salesforce, HubSpot), Customer Support (Zendesk, Freshdesk), Commerce (Shopify, Adobe Commerce), Analytics (Segment, Sigma, Snowflake), Communication (WhatsApp, Slack, SendGrid), and more via pre-built integration functions.

Real-Time Collaboration

Multiple team members — designers, developers, and business stakeholders — can collaborate simultaneously on the same agent project within Voiceflow's shared canvas. The platform has been tested with up to 100 concurrent collaborators on a single design, with a single source of truth and full project history.

Enterprise Security & Compliance

Voiceflow is SOC-2 Type II, ISO/IEC 27001:2022, GDPR, and HIPAA compliant, with AES encryption at rest, TLS/mTLS in transit, customer-managed keys, SSO and granular user permissions, audit logging, and multi-AZ cloud infrastructure on AWS and GCP. Enterprise teams also get DDoS protection and WAF.

Prototype Testing & Instant Previews

Teams can test and share AI agent prototypes in real-time throughout the build lifecycle — from first design to production launch — using 1:1 previews that reflect live knowledge base responses. Adjustments to LLM settings, prompts, and flows are immediately reflected in the preview environment.