Implementation:Elevenlabs Elevenlabs python WorkflowExpressionConditionModelOutputExpression

Attribute	Value
Page Type	Implementation
Language	Python
SDK	elevenlabs
Type	Discriminated Union (type alias)
Source File	src/elevenlabs/types/workflow_expression_condition_model_output_expression.py
Auto-Generated	Yes (Fern API Definition)

Overview

Description

WorkflowExpressionConditionModelOutputExpression is a discriminated union type representing an expression to evaluate within a workflow condition node output. It mirrors the input expression union and supports 13 expression variants including logical operators (AND, OR), comparison operators (EQ, NEQ, GT, GTE, LT, LTE), literal values (boolean, number, string), dynamic variable references, and LLM-based evaluation prompts. The union is discriminated on the type field.

Usage

This type is returned by the ElevenLabs API as part of a workflow definition and represents the evaluated or stored state of conditional expressions. Each variant represents a different kind of expression node in the AST. This is the output (read) counterpart to the input expression type, with output-specific AST node types for operands and children.

Code Reference

Source Location

src/elevenlabs/types/workflow_expression_condition_model_output_expression.py

Type Definition

WorkflowExpressionConditionModelOutputExpression = typing_extensions.Annotated[
    typing.Union[
        WorkflowExpressionConditionModelOutputExpression_AndOperator,
        WorkflowExpressionConditionModelOutputExpression_BooleanLiteral,
        WorkflowExpressionConditionModelOutputExpression_DynamicVariable,
        WorkflowExpressionConditionModelOutputExpression_EqOperator,
        WorkflowExpressionConditionModelOutputExpression_GtOperator,
        WorkflowExpressionConditionModelOutputExpression_GteOperator,
        WorkflowExpressionConditionModelOutputExpression_Llm,
        WorkflowExpressionConditionModelOutputExpression_LtOperator,
        WorkflowExpressionConditionModelOutputExpression_LteOperator,
        WorkflowExpressionConditionModelOutputExpression_NeqOperator,
        WorkflowExpressionConditionModelOutputExpression_NumberLiteral,
        WorkflowExpressionConditionModelOutputExpression_OrOperator,
        WorkflowExpressionConditionModelOutputExpression_StringLiteral,
    ],
    UnionMetadata(discriminant="type"),
]

Import Statement

from elevenlabs.types import WorkflowExpressionConditionModelOutputExpression

I/O Contract

Union Variants

Variant Class	type Discriminator	Fields	Description
_AndOperator	"and_operator"	children: List[AstAndOperatorNodeOutputChildrenItem]	Logical AND operator with child expressions.
_BooleanLiteral	"boolean_literal"	value: bool	A boolean literal value.
_DynamicVariable	"dynamic_variable"	name: str	A reference to a dynamic variable by name.
_EqOperator	"eq_operator"	left: AstEqualsOperatorNodeOutputLeft, right: AstEqualsOperatorNodeOutputRight	Equality comparison operator.
_GtOperator	"gt_operator"	left: AstGreaterThanOperatorNodeOutputLeft, right: AstGreaterThanOperatorNodeOutputRight	Greater-than comparison operator.
_GteOperator	"gte_operator"	left: AstGreaterThanOrEqualsOperatorNodeOutputLeft, right: AstGreaterThanOrEqualsOperatorNodeOutputRight	Greater-than-or-equals comparison operator.
_Llm	"llm"	prompt: str	LLM-based evaluation using a prompt string.
_LtOperator	"lt_operator"	left: AstLessThanOperatorNodeOutputLeft, right: AstLessThanOperatorNodeOutputRight	Less-than comparison operator.
_LteOperator	"lte_operator"	left: AstLessThanOrEqualsOperatorNodeOutputLeft, right: AstLessThanOrEqualsOperatorNodeOutputRight	Less-than-or-equals comparison operator.
_NeqOperator	"neq_operator"	left: AstNotEqualsOperatorNodeOutputLeft, right: AstNotEqualsOperatorNodeOutputRight	Not-equals comparison operator.
_NumberLiteral	"number_literal"	value: float	A numeric literal value.
_OrOperator	"or_operator"	children: List[AstOrOperatorNodeOutputChildrenItem]	Logical OR operator with child expressions.
_StringLiteral	"string_literal"	value: str	A string literal value.

Common Configuration (all variants):

• Frozen (immutable) models
• Allow extra fields
• Support both Pydantic v1 and v2
• Forward references resolved via update_forward_refs

Usage Examples

Inspecting an output expression

from elevenlabs.types import WorkflowExpressionConditionModelOutputExpression

# After receiving a workflow from the API
expression: WorkflowExpressionConditionModelOutputExpression = ...

# Check the expression type using the discriminant
if expression.type == "boolean_literal":
    print(f"Boolean value: {expression.value}")
elif expression.type == "dynamic_variable":
    print(f"Variable name: {expression.name}")
elif expression.type == "llm":
    print(f"LLM prompt: {expression.prompt}")
elif expression.type == "eq_operator":
    print(f"Equals: {expression.left} == {expression.right}")

Constructing an output boolean literal

from elevenlabs.types.workflow_expression_condition_model_output_expression import (
    WorkflowExpressionConditionModelOutputExpression_BooleanLiteral,
)

expr = WorkflowExpressionConditionModelOutputExpression_BooleanLiteral(
    value=False,
)

Constructing an output number literal

from elevenlabs.types.workflow_expression_condition_model_output_expression import (
    WorkflowExpressionConditionModelOutputExpression_NumberLiteral,
)

expr = WorkflowExpressionConditionModelOutputExpression_NumberLiteral(
    value=42.0,
)

Related Pages

• WorkflowExpressionConditionModelInputExpression - Input counterpart of this expression union
• WorkflowPhoneNumberNodeModelOutput - Phone number node model for workflow outputs
• WorkflowOverrideAgentNodeModelInput - Override agent node model for workflow inputs