LanguageModelSessionsMBS.Constructor(Model as SystemLanguageModelsMBS = nil, Instructions as InstructionsMBS)

model: The language model to use for this session.
instructions: Instructions that control the model's behavior.

See also:

• Constructor(Model as SystemLanguageModelsMBS = nil, Instructions as String)
• Constructor(Model as SystemLanguageModelsMBS = nil, Transcript as TranscriptMBS)

LanguageModelSessionsMBS.Constructor(Model as SystemLanguageModelsMBS = nil, Instructions as String)

Var session As New LanguageModelSessionsMBS("You are a chatbot in Xojo.")
Var instructions as string = session.Instructions
MessageBox Instructions

model: The language model to use for this session.
instructions: Instructions that control the model's behavior.

See also:

• Constructor(Model as SystemLanguageModelsMBS = nil, Instructions as InstructionsMBS)
• Constructor(Model as SystemLanguageModelsMBS = nil, Transcript as TranscriptMBS)

LanguageModelSessionsMBS.Constructor(Model as SystemLanguageModelsMBS = nil, Transcript as TranscriptMBS)

model: The language model to use for this session.
transcript: A transcript to resume from.

See also:

• Constructor(Model as SystemLanguageModelsMBS = nil, Instructions as InstructionsMBS)
• Constructor(Model as SystemLanguageModelsMBS = nil, Instructions as String)

LanguageModelSessionsMBS.prewarm(Prompt as PromptMBS = nil)

This method can be useful in cases where you have a strong signal that the user will interact with session within a few seconds. For example, you might call prewarm when the user begins typing into a text field.

If you know a prefix for the future prompt, passing it to prewarm will allow the system to process the prompt eagerly and reduce latency for the future request.

Important: You should only use prewarm when you have a window of at least 1s before the call to respond.

Note: Calling this method does not guarantee that the system loads your assets immediately, particularly if your app is running in the background or the system is under load.

LanguageModelSessionsMBS.respond(prompt as PromptMBS) as ResponseMBS

prompt: A prompt for the model to respond to.

We wait for the answer and return it.

If temperature >= 0 or maximumResponseTokens >= 0, we pass these as options.

See also:

• respond(prompt as PromptMBS, theDelegate as ResponseCompletedMBS, tag as Variant = nil)
• respond(prompt as String) as String
• respond(prompt as String, theDelegate as ResponseCompletedMBS, tag as Variant = nil)

Some examples using this method:

• /Swift/Foundation Models

LanguageModelSessionsMBS.respond(prompt as PromptMBS, theDelegate as ResponseCompletedMBS, tag as Variant = nil)

prompt: A prompt for the model to respond to.

We call the delegate later to report result and pass through tag value.

If temperature >= 0 or maximumResponseTokens >= 0, we pass these as options.

See also:

• respond(prompt as PromptMBS) as ResponseMBS
• respond(prompt as String) as String
• respond(prompt as String, theDelegate as ResponseCompletedMBS, tag as Variant = nil)

LanguageModelSessionsMBS.respond(prompt as String) as String

Var session As New LanguageModelSessionsMBS("You are a chatbot in Xojo. Be brief.")
var response as string = session.respond("Can Xojo do web apps?")
MessageBox response

' Yes, Xojo can be used To create web apps. Xojo Web Apps Is a framework
' that allows developers To build web applications Using Xojo's native
' programming language. It provides a set Of tools And libraries To handle
' web development tasks, such As server-side scripting,
' HTML/CSS/JavaScript, And database integration.

prompt: A prompt for the model to respond to.

We wait for the answer and return it.

If temperature >= 0 or maximumResponseTokens >= 0, we pass these as options.

See also:

• respond(prompt as PromptMBS) as ResponseMBS
• respond(prompt as PromptMBS, theDelegate as ResponseCompletedMBS, tag as Variant = nil)
• respond(prompt as String, theDelegate as ResponseCompletedMBS, tag as Variant = nil)

LanguageModelSessionsMBS.respond(prompt as String, theDelegate as ResponseCompletedMBS, tag as Variant = nil)

prompt: A prompt for the model to respond to.

We call the delegate later to report result and pass through tag value.

If temperature >= 0 or maximumResponseTokens >= 0, we pass these as options.

See also:

• respond(prompt as PromptMBS) as ResponseMBS
• respond(prompt as PromptMBS, theDelegate as ResponseCompletedMBS, tag as Variant = nil)
• respond(prompt as String) as String

LanguageModelSessionsMBS.tokenCount(prompt as PromptMBS) as Integer   New in 26.2

New for macOS/iOS 26.4 or newer.

See also:

• tokenCount(prompt as PromptMBS, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)
• tokenCount(prompt as String) as Integer
• tokenCount(prompt as String, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)

LanguageModelSessionsMBS.tokenCount(prompt as PromptMBS, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)   New in 26.2

New for macOS/iOS 26.4 or newer.

See also:

• tokenCount(prompt as PromptMBS) as Integer
• tokenCount(prompt as String) as Integer
• tokenCount(prompt as String, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)

LanguageModelSessionsMBS.tokenCount(prompt as String) as Integer   New in 26.2

Var session As New LanguageModelSessionsMBS("")
Var count As Integer = session.tokenCount("Hello World")

Break // shows 10

New for macOS/iOS 26.4 or newer.

See also:

• tokenCount(prompt as PromptMBS) as Integer
• tokenCount(prompt as PromptMBS, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)
• tokenCount(prompt as String, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)

LanguageModelSessionsMBS.tokenCount(prompt as String, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)   New in 26.2

Calls TokenCountCompletedMBS event later.

New for macOS/iOS 26.4 or newer.

See also:

• tokenCount(prompt as PromptMBS) as Integer
• tokenCount(prompt as PromptMBS, theDelegate as TokenCountCompletedMBS, tag as Variant = nil)
• tokenCount(prompt as String) as Integer

LanguageModelSessionsMBS.transcript as TranscriptMBS

Some examples using this method:

• /Swift/Foundation Models