<!-- Do not edit this file. It is automatically generated by API Documenter. --> [Home](./index.md) > [bitburner](./bitburner.md) > [Bladeburner](./bitburner.bladeburner.md) > [getSkillUpgradeCost](./bitburner.bladeburner.getskillupgradecost.md) ## Bladeburner.getSkillUpgradeCost() method Get cost to upgrade skill. **Signature:** ```typescript getSkillUpgradeCost(skillName: string, count?: number): number; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | skillName | string | Name of skill. Case-sensitive and must be an exact match. | | count | number | _(Optional)_ Number of times to upgrade the skill. Defaults to 1 if not specified. | **Returns:** number Number of skill points needed to upgrade the specified skill. ## Remarks RAM cost: 4 GB This function returns the number of skill points needed to upgrade the specified skill the specified number of times. The function returns -1 if an invalid skill name is passed in, and Infinity if the count overflows the maximum level.