IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

ThinkingConfig.Builder

class ThinkingConfig.Builder

Summary

Public constructors
`Builder()`

Public functions
`ThinkingConfig`	`build()`
`ThinkingConfig.Builder`	`setIncludeThoughts(includeThoughts: Boolean)` Indicates whether to request the model to include the thoughts parts in the response.
`ThinkingConfig.Builder`	`setThinkingBudget(thinkingBudget: Int)` Indicates the thinking budget in tokens.
`ThinkingConfig.Builder`	`setThinkingLevel(thinkingLevel: ThinkingLevel)` Indicates the thinking budget in `ThinkingLevel`s.

Public properties
`Boolean?`	`includeThoughts`
`Int?`	`thinkingBudget`
`ThinkingLevel?`	`thinkingLevel`

Public constructors

Builder

Builder()

Public functions

build

fun build(): ThinkingConfig

setIncludeThoughts

fun setIncludeThoughts(includeThoughts: Boolean): ThinkingConfig.Builder

Indicates whether to request the model to include the thoughts parts in the response.

Keep in mind that once enabled, you should check for the isThought property when processing a Part instance to correctly handle both thoughts and the actual response.

The default value is false.

setThinkingBudget

fun setThinkingBudget(thinkingBudget: Int): ThinkingConfig.Builder

Indicates the thinking budget in tokens.

The range of supported thinking budget values depends on the model.

To disable thinking, when supported by the model, set this value to 0.
To use dynamic thinking, allowing the model to decide on the thinking budget based on the task, set this value to -1.

setThinkingLevel

fun setThinkingLevel(thinkingLevel: ThinkingLevel): ThinkingConfig.Builder

Indicates the thinking budget in ThinkingLevels.

If you don't specify a thinking level, Gemini will use the model's default dynamic thinking level.

Important: Gemini 2.5 series models do not support thinking levels; use setThinkingBudget to set a thinking budget instead.

Parameters
`thinkingLevel: ThinkingLevel`	A preset that controls the model's "thinking" process. Use `ThinkingLevel.LOW` for faster responses on less complex tasks, and `ThinkingLevel.HIGH` for better reasoning on more complex tasks.

Public properties

includeThoughts

var includeThoughts: Boolean?

thinkingBudget

var thinkingBudget: Int?

thinkingLevel

var thinkingLevel: ThinkingLevel?