ResponseTone enum

The tone and style the AI should use when writing its response.

Pass this to Prompt to shape how the model communicates — not what it says, but how it says it. Prompt.build converts this into a natural-language instruction in the system prompt.

Prompt(
  tone: ResponseTone.friendly,
  format: ResponseFormat.bulletedList,
)
Inheritance
Available extensions

Values

formal → const ResponseTone

Professional and objective — no slang, no filler.

Best for business apps, reports, and any context where credibility and precision matter more than personality.

casual → const ResponseTone

Relaxed, conversational, everyday language.

Best for social apps, entertainment, and any context where the user expects a natural, human-like back-and-forth.

friendly → const ResponseTone

Warm and encouraging — like a helpful friend, not a manual.

Best for onboarding flows, health apps, coaching tools, or any product that benefits from a supportive tone.

concise → const ResponseTone

Short, direct, no fluff.

Best when the user needs a fast answer and does not want context, caveats, or elaboration. Pairs well with ResponseFormat.oneSentence or ResponseFormat.oneWord.

detailed → const ResponseTone

Thorough and explanatory — covers context, reasoning, and examples.

Best for educational apps, technical documentation, or any case where the user benefits from understanding the full picture.

Properties

compressed → String
Short token-compressed label used in the telegraphic system prompt.
no setter
hashCode → int
The hash code for this object.
no setterinherited
index → int
A numeric identifier for the enumerated value.
no setterinherited
instruction → String
The natural-language instruction injected into the system prompt.
no setter
name → String

Available on Enum, provided by the EnumName extension

The name of the enum value.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

values → const List<ResponseTone>
A constant List of the values in this enum, in order of their declaration.