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const { matchModelName } = require('../utils');
const defaultRate = 6;
/**
* Mapping of model token sizes to their respective multipliers for prompt and completion.
* @type {Object.<string, {prompt: number, completion: number}>}
*/
const tokenValues = {
'8k': { prompt: 30, completion: 60 },
'32k': { prompt: 60, completion: 120 },
'4k': { prompt: 1.5, completion: 2 },
'16k': { prompt: 3, completion: 4 },
};
/**
* Retrieves the key associated with a given model name.
*
* @param {string} model - The model name to match.
* @returns {string|undefined} The key corresponding to the model name, or undefined if no match is found.
*/
const getValueKey = (model) => {
const modelName = matchModelName(model);
if (!modelName) {
return undefined;
}
if (modelName.includes('gpt-3.5-turbo-16k')) {
return '16k';
} else if (modelName.includes('gpt-3.5')) {
return '4k';
} else if (modelName.includes('gpt-4-32k')) {
return '32k';
} else if (modelName.includes('gpt-4')) {
return '8k';
}
return undefined;
};
/**
* Retrieves the multiplier for a given value key and token type. If no value key is provided,
* it attempts to derive it from the model name.
*
* @param {Object} params - The parameters for the function.
* @param {string} [params.valueKey] - The key corresponding to the model name.
* @param {string} [params.tokenType] - The type of token (e.g., 'prompt' or 'completion').
* @param {string} [params.model] - The model name to derive the value key from if not provided.
* @returns {number} The multiplier for the given parameters, or a default value if not found.
*/
const getMultiplier = ({ valueKey, tokenType, model }) => {
if (valueKey && tokenType) {
return tokenValues[valueKey][tokenType] ?? defaultRate;
}
if (!tokenType || !model) {
return 1;
}
valueKey = getValueKey(model);
if (!valueKey) {
return defaultRate;
}
// If we got this far, and values[tokenType] is undefined somehow, return a rough average of default multipliers
return tokenValues[valueKey][tokenType] ?? defaultRate;
};
module.exports = { tokenValues, getValueKey, getMultiplier, defaultRate };
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