> ## Documentation Index
> Fetch the complete documentation index at: https://praison.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# Thinking Budget Builder • Rust AI Agent SDK
> ThinkingBudgetBuilder: Builder for ThinkingBudget.
# ThinkingBudgetBuilder
> Defined in the [**thinking**](../modules/thinking) module.
Rust AI Agent SDK
Builder for ThinkingBudget.
## Fields
| Name | Type | Description |
| ----------------------- | --------------------------- | ----------- |
| `max_tokens` | `Option<usize>` | - |
| `max_time_seconds` | `Option<f64>` | - |
| `adaptive` | `Option<bool>` | - |
| `level` | `Option<BudgetLevel>` | - |
| `min_tokens` | `Option<usize>` | - |
| `complexity_multiplier` | `Option<f64>` | - |
## Methods
### `max_tokens`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn max_tokens(mut self, tokens: usize) -> Self
```
Set maximum tokens.
**Parameters:**
| Name | Type |
| -------- | ------- |
| `tokens` | `usize` |
### `max_time_seconds`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn max_time_seconds(mut self, seconds: f64) -> Self
```
Set maximum time in seconds.
**Parameters:**
| Name | Type |
| --------- | ----- |
| `seconds` | `f64` |
### `adaptive`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn adaptive(mut self, adaptive: bool) -> Self
```
Set adaptive mode.
**Parameters:**
| Name | Type |
| ---------- | ------ |
| `adaptive` | `bool` |
### `level`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn level(mut self, level: BudgetLevel) -> Self
```
Set budget level.
**Parameters:**
| Name | Type |
| ------- | ------------- |
| `level` | `BudgetLevel` |
### `min_tokens`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn min_tokens(mut self, tokens: usize) -> Self
```
Set minimum tokens for adaptive budgeting.
**Parameters:**
| Name | Type |
| -------- | ------- |
| `tokens` | `usize` |
### `complexity_multiplier`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn complexity_multiplier(mut self, multiplier: f64) -> Self
```
Set complexity multiplier.
**Parameters:**
| Name | Type |
| ------------ | ----- |
| `multiplier` | `f64` |
### `build`
```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}}
fn build(self) -> ThinkingBudget
```
Build the ThinkingBudget.
## Source
`praisonai/src/thinking/mod.rs` at line 182
***
## Related Documentation