Editions

Dialogflow agents are available in multiple agent types and editions. The agent type, features, pricing, and quotas vary for each edition.

Agent types

The following agent types are available:

Term	Definition
Dialogflow CX agent	This is an advanced agent type that is suitable for large or very complex agents. Flows and pages are the building blocks of conversation design, and state handlers are used to control conversation paths. This agent type is summarized in Dialogflow CX basics.
Dialogflow ES agent	This is the standard agent type that is suitable for small to medium and simple to moderately complex agents. Intents are the building blocks of conversation design, and contexts are used to control conversation paths. This agent type is summarized in Dialogflow ES basics.

The following table provides a summary comparison of agent types. If you have an existing Dialogflow ES agent, and you want a more detailed comparison, see Migrating from Dialogflow ES to Dialogflow CX.

Category	Dialogflow ES agent	Dialogflow CX agent
Editions	Dialogflow Trial Edition, Dialogflow Essentials Edition	Dialogflow CX Edition
Agent building blocks	Flat structure of intents	Graph structure of flows and pages
Conversation control	Linear conversation paths that simulate nonlinear paths using intents as nodes and contexts to control paths	State machine model with explicit conversation control using pages as nodes and state handlers to control paths
Console user experience	Mostly text forms	Visual graphs showing conversation paths and text forms for configurations
Intent reusability	Intents are coupled with fulfillment, events, and responses; specific to a conversation state, so difficult to reuse	Intents are simplified to remove this coupling and made highly reusable
Webhook error handling	Errors quietly ignored by agent, passed to API caller if present	Explicit error event handling built-in to your agent
Event handling	Invoked events trigger intent matches	Events handlers are first-class types with powerful controls
Conditional response messages	Requires webhook calls	Can be configured statically in fulfillment, with static conditions for a route, or with webhooks calls
Parameter scope	Can be scoped to intent, context, or event	Can be scoped to intent, form, or session
Built in testing	Not provided	Provided
Redaction	Not provided	Provided
Conditional logic	Not provided	Provided
DTMF input	Not provided	Provided
System functions for advanced responses and conditions	Not provided	Provided
Advanced NLU	Not provided	Provided
Agents per project	1	1000
Recommended agent size	Up to medium size agents	Up to very large
Recommended agent complexity	Up to moderately complex agents	Up to highly complex
Learning curve to design a simple agent	Basic	Moderate
Learning curve to design a complex agent	High	Moderate
Pricing and quotas	Granular	Simplified

Edition comparison

The following editions are available:

Term	Definition
Dialogflow Trial Edition	A no-cost edition that provides most of the features of the standard Dialogflow ES agent type. It offers limited quota and support by community and email. This edition is suitable to experiment with Dialogflow ES.
Dialogflow Essentials Edition	This is a pay-as-you-go edition that provides the standard Dialogflow ES agent type. This edition offers production-ready quotas and support from Google Cloud support.
Dialogflow CX Edition	This is a pay-as-you-go edition that provides the advanced Dialogflow CX agent type. This edition offers production-ready quotas and support from Google Cloud support.

The following tables provide a summary comparison for editions by agent type. For details, see Pricing and Quotas and Limits.