/**
* LLM Pricing Configuration
*
* Pricing Maintenance:
* 1. Check https://www.anthropic.com/pricing quarterly
* 2. Update prices if changed
* 3. Update lastUpdated date
* 4. Run tests to verify calculations still correct
* 5. Add new models as they're released
*
* Source: https://www.anthropic.com/pricing
* Last updated: 2026-01-29
*/
export interface ModelPricing {
inputPricePerMToken: number;
outputPricePerMToken: number;
/** For models with tiered pricing (e.g., Sonnet 4.5 >200K tokens) */
largePricing?: {
threshold: number;
inputPricePerMToken: number;
outputPricePerMToken: number;
};
source: string;
lastUpdated: string;
}
export const ANTHROPIC_PRICING: Record<string, ModelPricing> = {
'claude-opus-4-5-20251101': {
inputPricePerMToken: 5.00,
outputPricePerMToken: 25.00,
source: 'https://www.anthropic.com/pricing',
lastUpdated: '2026-01-29',
},
'claude-sonnet-4-5-20250929': {
inputPricePerMToken: 3.00,
outputPricePerMToken: 15.00,
largePricing: {
threshold: 200_000,
inputPricePerMToken: 6.00,
outputPricePerMToken: 22.50,
},
source: 'https://www.anthropic.com/pricing',
lastUpdated: '2026-01-29',
},
'claude-haiku-4-5-20250919': {
inputPricePerMToken: 1.00,
outputPricePerMToken: 5.00,
source: 'https://www.anthropic.com/pricing',
lastUpdated: '2026-01-29',
},
// Legacy models (commonly used in config)
'claude-3-5-sonnet-20241022': {
inputPricePerMToken: 3.00,
outputPricePerMToken: 15.00,
source: 'https://www.anthropic.com/pricing',
lastUpdated: '2026-01-29',
},
};
export const OPENAI_PRICING: Record<string, ModelPricing> = {
'gpt-4-turbo-preview': {
inputPricePerMToken: 10.0,
outputPricePerMToken: 30.0,
source: 'https://openai.com/pricing',
lastUpdated: '2026-01-29',
},
'gpt-4': {
inputPricePerMToken: 30.0,
outputPricePerMToken: 60.0,
source: 'https://openai.com/pricing',
lastUpdated: '2026-01-29',
},
'gpt-3.5-turbo': {
inputPricePerMToken: 0.5,
outputPricePerMToken: 1.5,
source: 'https://openai.com/pricing',
lastUpdated: '2026-01-29',
},
};
/**
* Calculate cost from token usage with accurate, model-specific pricing
*/
export function calculateCost(
model: string,
inputTokens: number,
outputTokens: number
): {
costUsd: number;
metadata: {
model: string;
inputPricePerMToken: number;
outputPricePerMToken: number;
pricingSource: string;
pricingDate: string;
};
} {
// Try Anthropic pricing first
let pricing = ANTHROPIC_PRICING[model];
// Try OpenAI pricing if not found
if (!pricing) {
pricing = OPENAI_PRICING[model];
}
if (!pricing) {
console.warn(`No pricing found for model ${model}, using Sonnet 4.5 pricing as fallback`);
const fallback = ANTHROPIC_PRICING['claude-sonnet-4-5-20250929'];
return {
costUsd: (inputTokens * fallback.inputPricePerMToken + outputTokens * fallback.outputPricePerMToken) / 1_000_000,
metadata: {
model,
inputPricePerMToken: fallback.inputPricePerMToken,
outputPricePerMToken: fallback.outputPricePerMToken,
pricingSource: fallback.source,
pricingDate: fallback.lastUpdated,
},
};
}
// Check if using large context pricing (Sonnet 4.5 only)
let inputPrice = pricing.inputPricePerMToken;
let outputPrice = pricing.outputPricePerMToken;
if (pricing.largePricing && inputTokens > pricing.largePricing.threshold) {
inputPrice = pricing.largePricing.inputPricePerMToken;
outputPrice = pricing.largePricing.outputPricePerMToken;
}
return {
costUsd: (inputTokens * inputPrice + outputTokens * outputPrice) / 1_000_000,
metadata: {
model,
inputPricePerMToken: inputPrice,
outputPricePerMToken: outputPrice,
pricingSource: pricing.source,
pricingDate: pricing.lastUpdated,
},
};
}
