4.3 Tools: HDL Copilot The HDL Copilot is the newest addition to the tools within Active-HDL (available in Active-HDL 15). This is a chatbot based on the OpenAI© API service aimed to assist in authoring HDL code. The HDL Copilot can also be invoked from within the HDL Editor. This video will demonstrate how to set up the HDL Copilot and will demonstrate the capabilities of the HDL Copilot.