Struct ThinkingConfig 

pub struct ThinkingConfig {
    pub thinking_budget: Option<i32>,
    pub include_thoughts: Option<bool>,
}

Configuration for thinking (Gemini 2.5 series only)

Fields

thinking_budget: Option<i32>

The thinking budget (number of thinking tokens)

• Set to 0 to disable thinking
• Set to -1 for dynamic thinking (model decides)
• Set to a positive number for a specific token budget

Model-specific ranges:

• 2.5 Pro: 128 to 32768 (cannot disable thinking)
• 2.5 Flash: 0 to 24576
• 2.5 Flash Lite: 512 to 24576

include_thoughts: Option<bool>

Whether to include thought summaries in the response

When enabled, the response will include synthesized versions of the model’s raw thoughts, providing insights into the reasoning process.

Implementations

impl ThinkingConfig

pub fn new() -> Self

Create a new thinking config with default settings

pub fn with_thinking_budget(self, budget: i32) -> Self

Set the thinking budget

pub fn with_dynamic_thinking(self) -> Self

Enable dynamic thinking (model decides the budget)

pub fn with_thoughts_included(self, include: bool) -> Self

Include thought summaries in the response

Trait Implementations

impl Clone for ThinkingConfig

fn clone(&self) -> ThinkingConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ThinkingConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ThinkingConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ThinkingConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ThinkingConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.