Struct ImageTokenCounter 

pub struct ImageTokenCounter { /* private fields */ }

Image token counting for different providers.

Different AI providers count image tokens differently:

• OpenAI: ~85 tokens base + variable based on resolution
• Anthropic: ~1600 tokens per image
• Google: ~258 tokens per image
• Ollama: ~100 tokens per image (estimate)

Implementations

impl ImageTokenCounter

pub fn new() -> Self

Create a new image token counter.

pub fn with_counter(token_counter: Arc<TokenCounter>) -> Self

Create with an existing token counter.

pub fn count_image_tokens( &self, metadata: &ImageMetadata, provider_name: &str, model: &str, ) -> ImageResult<usize>

Count tokens for a single image based on provider and model.

Arguments

• metadata - Image metadata including dimensions
• provider_name - Name of the provider (openai, anthropic, google, ollama)
• model - Model identifier

Returns

Number of tokens used for the image

pub fn count_multiple_image_tokens( &self, images: &[ImageMetadata], provider_name: &str, model: &str, ) -> ImageResult<usize>

Count tokens for multiple images.

Arguments

• images - Vector of image metadata
• provider_name - Name of the provider
• model - Model identifier

Returns

Total tokens for all images

pub fn count_prompt_tokens( &self, prompt: &str, model: &str, ) -> ImageResult<usize>

Count tokens for image analysis prompt.

This counts tokens for the analysis prompt text that accompanies the image.

pub fn count_total_tokens( &self, metadata: &ImageMetadata, prompt: &str, provider_name: &str, model: &str, ) -> ImageResult<usize>

Count total tokens for image analysis (image + prompt).

Arguments

• metadata - Image metadata
• prompt - Analysis prompt text
• provider_name - Provider name
• model - Model identifier

Returns

Total tokens for image + prompt

pub fn token_counter(&self) -> &TokenCounter

Get the underlying token counter.

Trait Implementations

impl Default for ImageTokenCounter

fn default() -> Self

Returns the “default value” for a type.