hobokenchicken
08cf5cc1d9
- Added support for reasoning tokens in cost calculations. - Fixed DeepSeek cache-write token mapping (PromptCacheMissTokens). - Improved CalculateCost debug logging to trace all pricing variables.
70 lines
2.1 KiB
Go
70 lines
2.1 KiB
Go
package utils
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import (
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"encoding/json"
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"fmt"
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"log"
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"time"
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"gophergate/internal/models"
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"github.com/go-resty/resty/v2"
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)
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const ModelsDevURL = "https://models.dev/api.json"
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func FetchRegistry() (*models.ModelRegistry, error) {
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log.Printf("Fetching model registry from %s", ModelsDevURL)
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client := resty.New().SetTimeout(10 * time.Second)
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resp, err := client.R().Get(ModelsDevURL)
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if err != nil {
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return nil, fmt.Errorf("failed to fetch registry: %w", err)
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}
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if !resp.IsSuccess() {
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return nil, fmt.Errorf("failed to fetch registry: HTTP %d", resp.StatusCode())
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}
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var providers map[string]models.ProviderInfo
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if err := json.Unmarshal(resp.Body(), &providers); err != nil {
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return nil, fmt.Errorf("failed to unmarshal registry: %w", err)
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}
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log.Println("Successfully loaded model registry")
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return &models.ModelRegistry{Providers: providers}, nil
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}
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func CalculateCost(registry *models.ModelRegistry, modelID string, promptTokens, completionTokens, reasoningTokens, cacheRead, cacheWrite uint32) float64 {
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meta := registry.FindModel(modelID)
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if meta == nil || meta.Cost == nil {
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log.Printf("[DEBUG] CalculateCost: model %s not found or has no cost metadata", modelID)
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return 0.0
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}
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// promptTokens is usually the TOTAL prompt size.
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// We subtract cacheRead from it to get the uncached part.
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uncachedTokens := promptTokens
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if cacheRead > 0 {
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if cacheRead > promptTokens {
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uncachedTokens = 0
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} else {
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uncachedTokens = promptTokens - cacheRead
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}
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}
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cost := (float64(uncachedTokens) * meta.Cost.Input / 1000000.0) +
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(float64(completionTokens) * meta.Cost.Output / 1000000.0)
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if meta.Cost.CacheRead != nil {
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cost += float64(cacheRead) * (*meta.Cost.CacheRead) / 1000000.0
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}
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if meta.Cost.CacheWrite != nil {
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cost += float64(cacheWrite) * (*meta.Cost.CacheWrite) / 1000000.0
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}
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log.Printf("[DEBUG] CalculateCost: model=%s, uncached=%d, completion=%d, reasoning=%d, cache_read=%d, cache_write=%d, cost=%f (input_rate=%f, output_rate=%f)",
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modelID, uncachedTokens, completionTokens, reasoningTokens, cacheRead, cacheWrite, cost, meta.Cost.Input, meta.Cost.Output)
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return cost
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}
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