PROMPTMETHEUS is an AI tool designed to function as a Prompt Engineering IDE. Its purpose is to enable users to create- test- optimize- and deploy LLM prompts. By integrating with major AI platforms- it empowers users to automate repetitive tasks and enhance their products and services with state-of-the-art AI capabilities. With PROMPTMETHEUS- users can develop AI integrations- streamline workflows- and access a range of features such as prompt composition- AI model fine-tuning- cost estimation- output evaluation- and completion exporting. The tool provides traceability- statistics- insights- and prompt chaining. Additionally- it facilitates prompt deployment to AIPI endpoints and promotes collaboration among team members for prompt and workflow creation.