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Fix OpenRouter cost calculation with BYOK #4543

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Merged
merged 1 commit into from
Jun 12, 2025
Merged

Fix OpenRouter cost calculation with BYOK #4543

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7 changes: 6 additions & 1 deletion src/api/providers/openrouter.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -48,8 +48,13 @@ interface CompletionUsage {
}
total_tokens?: number
cost?: number
is_byok?: boolean
}

// with bring your own key, OpenRouter charges 5% of what it normally would: https://openrouter.ai/docs/use-cases/byok
// so we multiply the cost reported by OpenRouter to get an estimate of what the request actually cost
const BYOK_COST_MULTIPLIER = 20

export class OpenRouterHandler extends BaseProvider implements SingleCompletionHandler {
protected options: ApiHandlerOptions
private client: OpenAI
Expand Down Expand Up @@ -164,7 +169,7 @@ export class OpenRouterHandler extends BaseProvider implements SingleCompletionH
// and how to best support it.
// cacheReadTokens: lastUsage.prompt_tokens_details?.cached_tokens,
reasoningTokens: lastUsage.completion_tokens_details?.reasoning_tokens,
totalCost: lastUsage.cost || 0,
totalCost: (lastUsage.is_byok ? BYOK_COST_MULTIPLIER : 1) * (lastUsage.cost || 0),
}
}
}
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