Enum ReasoningLevel 

pub enum ReasoningLevel {
    None,
    Minimal,
    Low,
    Medium,
    High,
    XHigh,
    Max,
}

Reasoning depth requested for a model call.

Default is Medium — matches OpenAI’s reasoning_effort default and is the level that produces useful chain-of-thought without burning excessive latency / tokens for routine prompts.

String form is lowercase ("none", "minimal", "low", "medium", "high", "max") so config files and CLI flags read naturally. ValueEnum is derived so clap can parse --reasoning <level> directly from the user-facing strings — no custom parser layer.

Variants

None

Reasoning explicitly disabled. On providers that always reason (Grok 4, deepseek-reasoner direct), maps to “lowest available”.

Minimal

Minimum reasoning the provider exposes. OpenAI GPT-5 calls this minimal; absent on most other providers (collapses to None or Low).

Low

Light reasoning for simple multi-step prompts.

Medium

The default. Useful chain-of-thought without excessive cost.

High

Heavy reasoning for hard prompts.

XHigh

Between High and Max — OpenAI GPT-5.2+ xhigh, Anthropic Opus 4.7 xhigh (gated per-model). A step up from High for providers that expose a dedicated xhigh tier. Providers without it snap down via nearest_effort to High.

Max

Maximum reasoning the model exposes. Anthropic’s adaptive max, OpenRouter’s max. On OpenAI Chat Completions Effort this collapses to high (no max tier in that shape); on Gemini 3 collapses to high (no max tier there either).

Implementations

impl ReasoningLevel

pub fn as_str(self) -> &'static str

Lowercase string form (matches the serde representation). Provided as a method so call sites that want a &'static str don’t have to round-trip through serde.

Trait Implementations

impl Clone for ReasoningLevel

fn clone(&self) -> ReasoningLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReasoningLevel

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

Formats the value using the given formatter.

impl Default for ReasoningLevel

fn default() -> ReasoningLevel

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ReasoningLevel

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for ReasoningLevel

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for ReasoningLevel

fn cmp(&self, other: &ReasoningLevel) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ReasoningLevel

fn eq(&self, other: &ReasoningLevel) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for ReasoningLevel

fn partial_cmp(&self, other: &ReasoningLevel) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ReasoningLevel

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ValueEnum for ReasoningLevel

fn value_variants<'a>() -> &'a [Self]

All possible argument values, in display order.

fn to_possible_value<'a>(&self) -> Option<PossibleValue>

The canonical argument value.

fn from_str(input: &str, ignore_case: bool) -> Result<Self, String>

Parse an argument into Self.

impl Copy for ReasoningLevel

impl Eq for ReasoningLevel

impl StructuralPartialEq for ReasoningLevel