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token_budget_base_overhead

phi_agent

Function token_budget_base_overhead 

Source 
pub fn token_budget_base_overhead(
    config: &TokenBudgetConfig,
    system_prompt: Option<&str>,
) -> usize
Expand description

Token estimate of the fixed content every window starts with: system prompt + window info + guidance + seed (no thread hint — the best case; app-provided hints add on top).

Call ONCE at build time — the system prompt is process-constant, so the result never changes for the lifetime of the agent. The estimate is a char count (~4 chars/token Latin, ~1.5 CJK), not a tokenizer call.