Struct TokenCounter

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pub struct TokenCounter { /* private fields */ }

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impl TokenCounter

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pub fn new() -> Self

Create a new counter. Falls back to chars/4 if tiktoken init fails.

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pub fn count_tokens(&self, text: &str) -> usize

Count tokens in text. Uses cache, falls back to heuristic.

Inputs exceeding 64 KiB bypass BPE and use chars/4 without caching to avoid CPU amplification from oversized inputs.

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pub fn count_tool_schema_tokens(&self, schema: &Value) -> usize

Count tokens for an OpenAI tool/function schema JSON value.

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impl Default for TokenCounter

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fn default() -> Self

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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impl UnwindSafe for TokenCounter

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