promptdiff

type CostLine struct {
	Model string  `json:"model"`
	Old   float64 `json:"old"`
	New   float64 `json:"new"`
	Delta float64 `json:"delta"`
	// Approx is true when Model has no known BPE vocabulary, so the token
	// counts behind Old/New/Delta are approximated with cl100k_base rather
	// than the model's real tokenizer.
	Approx bool `json:"approx"`
}

type Diff struct {
	TokenDelta      int         `json:"token_delta"`
	TokenPercent    float64     `json:"token_percent"`
	Costs           []CostLine  `json:"costs"`
	AddedSections   []string    `json:"added_sections,omitempty"`
	RemovedSections []string    `json:"removed_sections,omitempty"`
	ModifiedVars    []VarChange `json:"modified_vars,omitempty"`
	AddedVars       []string    `json:"added_vars,omitempty"`
	RemovedVars     []string    `json:"removed_vars,omitempty"`
}

type VarChange struct {
	From string `json:"from"`
	To   string `json:"to"`
}