Struct TokenUsage 

pub struct TokenUsage {
    pub input_tokens: Option<u64>,
    pub output_tokens: Option<u64>,
    pub cache_creation_input_tokens: Option<u64>,
    pub cache_read_input_tokens: Option<u64>,
    pub reasoning_output_tokens: Option<u64>,
}

GenAI token usage recorded on spans and token usage metrics.

Fields

input_tokens: Option<u64>

Input token count.

output_tokens: Option<u64>

Output token count.

cache_creation_input_tokens: Option<u64>

Anthropic cache-creation input token count.

cache_read_input_tokens: Option<u64>

Cached input token count.

reasoning_output_tokens: Option<u64>

Reasoning output token count.

Trait Implementations

impl Clone for TokenUsage

fn clone(&self) -> TokenUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TokenUsage

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

Formats the value using the given formatter.

impl Default for TokenUsage

fn default() -> TokenUsage

Returns the “default value” for a type.