Implementation:Elevenlabs Elevenlabs python WorkflowExpressionConditionModelInputExpression

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

Overview

Description

WorkflowExpressionConditionModelInputExpression is a discriminated union type representing an expression to evaluate within a workflow condition node input. It 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 used when defining conditional branching logic within a workflow input. Each variant represents a different kind of expression node in an abstract syntax tree (AST). Logical operators can nest child expressions, comparison operators take left and right operands, and literals provide constant values. The LLM variant allows conditions to be evaluated using a language model prompt.

Code Reference

Source Location

src/elevenlabs/types/workflow_expression_condition_model_input_expression.py

Type Definition

WorkflowExpressionConditionModelInputExpression = typing_extensions.Annotated[
    typing.Union[
        WorkflowExpressionConditionModelInputExpression_AndOperator,
        WorkflowExpressionConditionModelInputExpression_BooleanLiteral,
        WorkflowExpressionConditionModelInputExpression_DynamicVariable,
        WorkflowExpressionConditionModelInputExpression_EqOperator,
        WorkflowExpressionConditionModelInputExpression_GtOperator,
        WorkflowExpressionConditionModelInputExpression_GteOperator,
        WorkflowExpressionConditionModelInputExpression_Llm,
        WorkflowExpressionConditionModelInputExpression_LtOperator,
        WorkflowExpressionConditionModelInputExpression_LteOperator,
        WorkflowExpressionConditionModelInputExpression_NeqOperator,
        WorkflowExpressionConditionModelInputExpression_NumberLiteral,
        WorkflowExpressionConditionModelInputExpression_OrOperator,
        WorkflowExpressionConditionModelInputExpression_StringLiteral,
    ],
    UnionMetadata(discriminant="type"),
]

Import Statement

from elevenlabs.types import WorkflowExpressionConditionModelInputExpression

I/O Contract

Union Variants

Variant Class	type Discriminator	Fields	Description
_AndOperator	"and_operator"	children: List[AstAndOperatorNodeInputChildrenItem]	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: AstEqualsOperatorNodeInputLeft, right: AstEqualsOperatorNodeInputRight	Equality comparison operator.
_GtOperator	"gt_operator"	left: AstGreaterThanOperatorNodeInputLeft, right: AstGreaterThanOperatorNodeInputRight	Greater-than comparison operator.
_GteOperator	"gte_operator"	left: AstGreaterThanOrEqualsOperatorNodeInputLeft, right: AstGreaterThanOrEqualsOperatorNodeInputRight	Greater-than-or-equals comparison operator.
_Llm	"llm"	prompt: str	LLM-based evaluation using a prompt string.
_LtOperator	"lt_operator"	left: AstLessThanOperatorNodeInputLeft, right: AstLessThanOperatorNodeInputRight	Less-than comparison operator.
_LteOperator	"lte_operator"	left: AstLessThanOrEqualsOperatorNodeInputLeft, right: AstLessThanOrEqualsOperatorNodeInputRight	Less-than-or-equals comparison operator.
_NeqOperator	"neq_operator"	left: AstNotEqualsOperatorNodeInputLeft, right: AstNotEqualsOperatorNodeInputRight	Not-equals comparison operator.
_NumberLiteral	"number_literal"	value: float	A numeric literal value.
_OrOperator	"or_operator"	children: List[AstOrOperatorNodeInputChildrenItem]	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

Creating a boolean literal expression

from elevenlabs.types.workflow_expression_condition_model_input_expression import (
    WorkflowExpressionConditionModelInputExpression_BooleanLiteral,
)

expr = WorkflowExpressionConditionModelInputExpression_BooleanLiteral(
    value=True,
)

Creating a dynamic variable expression

from elevenlabs.types.workflow_expression_condition_model_input_expression import (
    WorkflowExpressionConditionModelInputExpression_DynamicVariable,
)

expr = WorkflowExpressionConditionModelInputExpression_DynamicVariable(
    name="user_is_authenticated",
)

Creating an LLM-based condition expression

from elevenlabs.types.workflow_expression_condition_model_input_expression import (
    WorkflowExpressionConditionModelInputExpression_Llm,
)

expr = WorkflowExpressionConditionModelInputExpression_Llm(
    prompt="Has the user expressed intent to make a purchase?",
)

Creating a string literal expression

from elevenlabs.types.workflow_expression_condition_model_input_expression import (
    WorkflowExpressionConditionModelInputExpression_StringLiteral,
)

expr = WorkflowExpressionConditionModelInputExpression_StringLiteral(
    value="expected_value",
)

Related Pages

• WorkflowExpressionConditionModelOutputExpression - Output counterpart of this expression union
• WorkflowOverrideAgentNodeModelInput - Override agent node model for workflow inputs
• WorkflowStandaloneAgentNodeModelInput - Standalone agent node model for workflow inputs