Struct LlmUsage 

pub struct LlmUsage {
    pub input_tokens: i32,
    pub output_tokens: i32,
    pub total_tokens: i32,
    pub cache_read_tokens: Option<i32>,
    pub cache_creation_tokens: Option<i32>,
    pub thinking_tokens: Option<i32>,
    pub audio_input_tokens: Option<i32>,
    pub audio_output_tokens: Option<i32>,
}

Available on crate feature telemetry only.

Token usage data for recording on tracing spans.

Mirrors the token count fields from adk_core::UsageMetadata without depending on adk-core. Callers in adk-model convert from UsageMetadata to this struct before recording.

Example

use adk_telemetry::LlmUsage;
let usage = LlmUsage {
    input_tokens: 100,
    output_tokens: 50,
    total_tokens: 150,
    ..Default::default()
};

Fields

input_tokens: i32

Prompt / input token count.

output_tokens: i32

Completion / output token count.

total_tokens: i32

Total token count.

cache_read_tokens: Option<i32>

Tokens read from cache.

cache_creation_tokens: Option<i32>

Tokens used to create cache.

thinking_tokens: Option<i32>

Tokens used for chain-of-thought reasoning.

audio_input_tokens: Option<i32>

Audio input token count.

audio_output_tokens: Option<i32>

Audio output token count.

Trait Implementations

impl Clone for LlmUsage

fn clone(&self) -> LlmUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LlmUsage

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

Formats the value using the given formatter.

impl Default for LlmUsage

fn default() -> LlmUsage

Returns the “default value” for a type.